The Power of Pure CSS - No JavaScript Needed

*, ::after, ::before {
	box-sizing: border-box;
}
html {
	font-size: 100%;
}
body {
	max-width: 1440px;
	font-family: Verdana, sans-serif;
	font-size: 1rem;
}

.accordion-container {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	width: 95vw;
	margin: 0 auto;
	padding: 1rem;
	background: #E5E5E5;
}

/*=========== 56.25em (900px)=========== */
@media only screen and (min-width : 56.25em) {
	.accordion-container {
		width: 85vw;
	}
}

h2 {
	margin: .25rem;
	text-align: center;
	color: #333;
}

.accordion-nav {
	margin: 0;
	padding: 0;
	list-style: none;
}

.accordion-nav h3 {
	margin: .25rem 0;
	padding: 0;
	font-size: .75rem;
	font-weight: 300;
}

.accordion-nav h3 a {
	display: block;
	width: 250px;
	margin: 0;
	padding: .75rem;
	background-color: #7F7F7F;
	color: floralwhite;
	text-decoration: none;
	border-radius: .25rem;
}

/* =========== 33.750em (540px) =========== */
@media only screen and (min-width: 33.750em) {
	.accordion-nav h3 {
		font-size: 1.25rem;
	}
	.accordion-nav h3 a {
		width: 400px;
	}
}

/* =========== 48em (768px) =========== */
@media only screen and (min-width : 48em) {
	.accordion-nav h3 a {
		width: 700px;
	}
}

.accordion-nav > :not(:target) h3 a {
	background-color: #BFBFBF;
	color: #507293;
}

.accordion-nav h3 a:hover,
.accordion-nav h3 a:active,
.accordion-nav h3 a:focus {
	background-color: #BFBFBF;
	color: #666;
}

.accordion-nav > :target p,
.accordion-nav > :not(:target) p {
	margin: .25rem 0;
	padding: 0;
	height: 0;
	overflow: hidden;
	transition: all ease-in 1.5s;
}

.accordion-nav > :target p {
	height: 150px;
	width: 250px;
}

/* =========== 33.750em (540px) =========== */
@media only screen and (min-width: 33.750em) {
	.accordion-nav > :target p {
		height: 240px;
		width: 400px;
	}
}

/* =========== 48em (768px) =========== */
@media only screen and (min-width : 48em) {
	.accordion-nav > :target p {
		height: 420px;
		width: 700px;
	}
}

.accordion-nav #item-1 p,
.accordion-nav #item-2 p,
.accordion-nav #item-3 p {
	position: relative;
	/*background: url('../../images/item-01.jpg');*/
	background: url('http://img.imarketinx.de/pics/item-01.jpg');
	background-size: cover;
	border-radius: .25rem;
}

.accordion-nav #item-2 p {
	background-image: url('http://img.imarketinx.de/pics/item-02.jpg');
}

.accordion-nav #item-3 p {
	background-image: url('http://img.imarketinx.de/pics/item-03.jpg');
}

.accordion-nav p {
	height: 150px;
	width: 250px;
}

/* =========== 33.750em (540px) =========== */
@media only screen and (min-width: 33.750em) {
	.accordion-nav p {
		height: 240px;
		width: 400px;
	}
}

/* =========== 48em (768px) =========== */
@media only screen and (min-width : 48em) {
	.accordion-nav p {
		height: 420px;
		width: 700px;
	}
}

.accordion-nav p span,
.accordion-close {
	display: inline;
	position: absolute;
	font-size: .75rem;
}

/* =========== 33.750em (540px) =========== */
@media only screen and (min-width: 33.750em) {
	.accordion-nav p span,
	.accordion-close {
		font-size: 1rem;
	}
}

.accordion-nav p span {
	bottom: 0;
	left: 0;
	height: 2rem;
	width: 100%;
	padding: .25rem;
	text-indent: .25rem;
	background: rgba(0,0,0,.6);
	color: #FFF;
	border-radius: 0 0 .25rem .25rem;
}

.accordion-close  {
	right: 5%;
	text-decoration: none;
	color: #BFBFBF;
}
.accordion-close::before  {
	font-weight: 300;
	content: "x ";
}

20

Pure CSS Accordion with Images

By: pixeldev

</div>
    <div class="title">
      <h3 class="main-title">Spring</h3>
      <h4 class="subtitle">A flower blossoms for its own joy.
      </h4>
    </div>
  </div>
  <div class="item">
    <div class="photo"><img alt="Photo 2" class="background-photo" src="https://images.unsplash.com/photo-1491929007750-dce8ba76e610?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=747&q=80"></div>
    <div class="overlay"></div>
    <div class="title">
      <h3 class="main-title">Summer</h3>
      <h4 class="subtitle">Every summer has a story.</h4>
    </div>
  </div>
  <div class="item">
    <div class="photo"><img alt="Photo 3" class="background-photo" src="https://images.unsplash.com/photo-1459478309853-2c33a60058e7?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=750&q=80"></div>
    <div class="overlay"></div>
    <div class="title">
      <h3 class="main-title">fall</h3>
      <h4 class="subtitle">Life starts all over when it gets crisp in the fall.</h4>
    </div>
  </div>
  <div class="item">
    <div class="photo"><img alt="Photo 4" class="background-photo" src="https://images.unsplash.com/photo-1457269449834-928af64c684d?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=667&q=80"></div>
    <div class="overlay"></div>
    <div class="title">
      <h3 class="main-title">winter</h3>
      <h4 class="subtitle">When snow falls, nature listens.</h4>
    </div>
  </div>
</div>

/* BY Mostafa Alvandi*/

/*
FONTS
*/

@import url("https://fonts.googleapis.com/css2?family=Baloo+Tammudu+2:wght@500;700&display=swap");

/*
RESET
*/

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/*
LAYOUT
*/

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(
      to right,
      rgba(28, 103, 99, 0.4),
      rgba(12, 71, 70, 0.6)
    ),
    url("https://images.unsplash.com/photo-1457269449834-928af64c684d?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=667&q=80")
      no-repeat center center/cover;
  font-family: "Baloo Tammudu 2", cursive;
}

.container {
  display: flex;
  justify-content: center;
  position: relative;
  height: 60%;
  width: 95%;
  padding: 1rem;
}

.item {
  flex: 0 0 12%;
  position: relative;
  overflow: hidden;
  box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.55), -1px -1px 2px rgba(0, 0, 0, 0.51);
  transition: 0.5s;
}

.photo {
  height: 100%;
  width: 100%;
}

img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  filter: blur(1px);
  transition: 0.5s;
}

.overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  z-index: 10;
  opacity: 0;
  transition: 1s;
}

.title {
  position: absolute;
  top: 0;
  height: 100%;
  width: 100%;
  z-index: 20;
  padding: 1rem;
}
.main-title {
  color: aliceblue;
  text-transform: uppercase;
  text-shadow: 1px 1px 5px rgba(45, 44, 44, 0.77),
    -1px 2px 1px rgba(50, 50, 50, 0.8);
  transform-origin: top left;
  transition: 0.5s;
}

.subtitle {
  position: absolute;
  bottom: 1rem;
  font-size: 2rem;
  font-weight: 500;
  line-height: 1;
  padding-right: 1rem;
  color: aliceblue;
  text-shadow: 1px 1px 5px black;
  opacity: 0;
  transform: scale(0) translateY(2rem);
  transition: transform 0.1s 0.2s, opacity 0.1s 0.4s;
}

/*
ANIMATIONS
*/

.item:hover {
  flex: 1;
}

.item:hover .overlay {
  background-image: linear-gradient(
    to top,
    rgb(2, 2, 2),
    rgba(47, 46, 46, 0) 30%
  );
  opacity: 1;
  transition: 0.8s;
}

.item:hover .main-title {
  transform: scale(2);
}

.item:hover .subtitle {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.item:hover img {
  filter: blur(0);
}

20

Image accordion slider (pure CSS)

By: pixeldev

<title>Menu Hexagonal</title>

<nav>
		<ul class="menu_hex">
			<a href="#">
				<li class="hexagone">
					<p>Accueil</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 1</p>
					</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 2</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 3</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 4</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 5</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 6</p>
					</li>
				</a>
				<a href="#">
					<li class="hexagone">
						<p>Page 7</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 8</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 9</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 10</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 11</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 12</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 13</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 14</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 15</p>
				</li>
			</a>
			<a href="#">
				<li class="hexagone">
					<p>Page 16</p>
				</li>
			</a>
		</ul>
	</nav>

html {
	min-height : 100%;
}

.menu_hex {
	margin : 0 auto;
	margin-top : -150px;
	padding-top : 70px;
	height : 300px;
	width : 680px;
	list-style-type : none;
	text-align : center;
	z-index : 20;
	z-index : 0;
	transition : all 0.3s ease;
	background : #888888;
}

.hexagone {
	width : 90px;
	height : 45px;
	float : left;
	background : #474747;
	position : absolute;
	line-height : 1em;
	display : table;
	margin-top : 88px;
	margin-bottom : 0;
	margin-left : 275px;
	margin-right : 0;
	transition : all 0.3s ease-in;
}

.hexagone:hover {
	width : 124px;
	height : 70px;
	background : #585858;
	min-width : 85px;
	min-height : 40px;
}

.hexagone p {
	font-size : 1em;
	vertical-align : middle;
	display : table-cell;
	transition : all 0.3s ease-in;
}

.hexagone:hover p {
	font-size : 1.2em;
	line-height : 1.2em;
}

.hexagone:before {
	content : "";
	position : absolute;
	top : -30px;
	left : 0;
	width : 0;
	height : 0;
	border-left : 45px solid transparent;
	border-right : 45px solid transparent;
	border-bottom : 30px solid #474747;
	transition : all 0.3s ease-in;
}

.hexagone:after {
	content : "";
	position : absolute;
	bottom : -30px;
	left : 0;
	width : 0;
  height : 0;
	border-left : 45px solid transparent;
	border-right : 45px solid transparent;
	border-top : 30px solid #474747;
	transition : all 0.3s ease-in;
}

.hexagone:hover:after {
	bottom : -41px;
	border-top : 41px solid #585858;
	border-right : 62px solid transparent;
	border-left : 62px solid transparent;
}

.hexagone:hover:before {
	top : -41px;
	border-bottom : 41px solid #585858;
	border-right : 62px solid transparent;
	border-left : 62px solid transparent;
}

.menu_hex:hover a:nth-child(1) .hexagone {
	margin-top : 0;
	margin-bottom : 0;
	margin-left : 0;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(2) .hexagone {
	margin-top : 0;
	margin-bottom : 0;
	margin-left : 110px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(3) .hexagone {
	margin-top : 0;
	margin-bottom : 0;
	margin-left : 220px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(4) .hexagone {
	margin-top : 0;
	margin-bottom : 0;
	margin-left : 330px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(5) .hexagone {
	margin-top : 0;
	margin-bottom : 0;
	margin-left : 440px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(6) .hexagone {
	margin-top : 0;
	margin-bottom : 0;
	margin-left : 550px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(11) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 495px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(10) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 385px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(9) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 275px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(8) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 165px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(7) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 55px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(12) .hexagone {
	margin-top : 184px;
	margin-bottom : 0;
	margin-left : 110px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(13) .hexagone {
	margin-top : 184px;
	margin-bottom : 0;
	margin-left : 220px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(14) .hexagone {
	margin-top : 184px;
	margin-bottom : 0;
	margin-left : 330px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(15) .hexagone {
	margin-top : 184px;
	margin-bottom : 0;
	margin-left : 440px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(16) .hexagone {
	margin-top : 184px;
	margin-bottom : 0;
	margin-left : 550px;
	margin-right : 0;
}

.menu_hex:hover a:nth-child(17) .hexagone {
	margin-top : 184px;
	margin-bottom : 0;
	margin-left : 0;
	margin-right : 0;
}

.menu_hex a:nth-child(1) .hexagone {
	margin-top : 10px;
	margin-bottom : 0;
	margin-left : 25px;
	margin-right : 0;
}

.menu_hex a:nth-child(1) .hexagone:hover {
	margin-top : -16px;
	margin-bottom : 0;
	margin-left : -17px;
	margin-right : 0;
}

.menu_hex a:nth-child(2) .hexagone {
	margin-top : 10px;
	margin-bottom : 0;
	margin-left : 125px;
	margin-right : 0;
}

.menu_hex a:nth-child(2) .hexagone:hover {
	margin-top : -16px;
	margin-bottom : 0;
	margin-left : 93px;
	margin-right : 0;
}

.menu_hex a:nth-child(3) .hexagone {
	margin-top : 10px;
	margin-bottom : 0;
	margin-left : 225px;
	margin-right : 0;
}

.menu_hex a:nth-child(3) .hexagone:hover {
	margin-top : -16px;
	margin-bottom : 0;
	margin-left : 203px;
	margin-right : 0;
}

.menu_hex a:nth-child(4) .hexagone {
	margin-top : 10px;
	margin-bottom : 0;
	margin-left : 325px;
	margin-right : 0;
}

.menu_hex a:nth-child(4) .hexagone:hover {
	margin-top : -16px;
	margin-bottom : 0;
	margin-left : 313px;
	margin-right : 0;
}

.menu_hex a:nth-child(5) .hexagone {
	margin-top : 10px;
	margin-bottom : 0;
	margin-left : 425px;
	margin-right : 0;
}

.menu_hex a:nth-child(5) .hexagone:hover {
	margin-top : -16px;
	margin-bottom : 0;
	margin-left : 423px;
	margin-right : 0;
}

.menu_hex a:nth-child(6) .hexagone {
	margin-top : 10px;
	margin-bottom : 0;
	margin-left : 525px;
	margin-right : 0;
}

.menu_hex a:nth-child(6) .hexagone:hover {
	margin-top : -16px;
	margin-bottom : 0;
	margin-left : 533px;
	margin-right : 0;
}

.menu_hex a:nth-child(11) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 475px;
	margin-right : 0;
}

.menu_hex a:nth-child(11) .hexagone:hover {
	height : 60px;
	margin-top : 85px;
	margin-bottom : 0;
	margin-left : 478px;
	margin-right : 0;
}

.menu_hex a:nth-child(10) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 375px;
	margin-right : 0;
}

.menu_hex a:nth-child(10) .hexagone:hover {
	height : 60px;
	margin-top : 85px;
	margin-bottom : 0;
	margin-left : 368px;
	margin-right : 0;
}
	
.menu_hex a:nth-child(9) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 275px;
	margin-right : 0;
}

.menu_hex a:nth-child(9) .hexagone:hover {
	height : 60px;
	margin-top : 85px;
	margin-bottom : 0;
	margin-left : 258px;
	margin-right : 0;
}

.menu_hex a:nth-child(8) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 175px;
	margin-right : 0;
}

.menu_hex a:nth-child(8) .hexagone:hover {
	height : 60px;
	margin-top : 85px;
	margin-bottom : 0;
	margin-left : 148px;
	margin-right : 0;
}

.menu_hex a:nth-child(7) .hexagone {
	margin-top : 92px;
	margin-bottom : 0;
	margin-left : 75px;
	margin-right : 0;
}

.menu_hex a:nth-child(7) .hexagone:hover {
	height : 60px;
	margin-top : 85px;
	margin-bottom : 0;
	margin-left : 38px;
	margin-right : 0;
}

.menu_hex a:nth-child(12) .hexagone {
	margin-top : 174px;
	margin-bottom : 0;
	margin-left : 125px;
	margin-right : 0;
}

.menu_hex a:nth-child(12) .hexagone:hover {
	margin-top : 176px;
	margin-bottom : 0;
	margin-left : 93px;
	margin-right : 0;
}

.menu_hex a:nth-child(13) .hexagone {
	margin-top : 174px;
	margin-bottom : 0;
	margin-left : 225px;
	margin-right : 0;
}

.menu_hex a:nth-child(13) .hexagone:hover {
	margin-top : 176px;
	margin-bottom : 0;
	margin-left : 203px;
	margin-right : 0;
}

.menu_hex a:nth-child(14) .hexagone {
	margin-top : 174px;
	margin-bottom : 0;
	margin-left : 325px;
	margin-right : 0;
}

.menu_hex a:nth-child(14) .hexagone:hover {
	margin-top : 176px;
	margin-bottom : 0;
	margin-left : 313px;
	margin-right : 0;
}

.menu_hex a:nth-child(15) .hexagone {
	margin-top : 174px;
	margin-bottom : 0;
	margin-left : 425px;
	margin-right : 0;
}

.menu_hex a:nth-child(15) .hexagone:hover {
	margin-top : 176px;
	margin-bottom : 0;
	margin-left : 423px;
	margin-right : 0;
}

.menu_hex a:nth-child(16) .hexagone {
	margin-top : 174px;
	margin-bottom : 0;
	margin-left : 525px;
	margin-right : 0;
}

.menu_hex a:nth-child(16) .hexagone:hover {
	margin-top : 176px;
  margin-bottom : 0;
	margin-left : 533px;
	margin-right : 0;
}

.menu_hex a:nth-child(17) .hexagone {
	margin-top : 174px;
	margin-bottom : 0;
	margin-left : 25px;
	margin-right : 0;
}

.menu_hex a:nth-child(17) .hexagone:hover {
	margin-top : 176px;
	margin-bottom : 0;
	margin-left : -17px;
	margin-right : 0;
}

20

Menu Hexagone Pure CSS

By: pixeldev

@import url(https://fonts.googleapis.com/css?family=Varela+Round);

html, body { background: #333 url("https://codepen.io/images/classy_fabric.png"); }

.slides {
    padding: 0;
    width: 609px;
    height: 420px;
    display: block;
    margin: 0 auto;
    position: relative;
}

.slides * {
    user-select: none;
    -ms-user-select: none;
    -moz-user-select: none;
    -khtml-user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

.slides input { display: none; }

.slide-container { display: block; }

.slide {
    top: 0;
    opacity: 0;
    width: 609px;
    height: 420px;
    display: block;
    position: absolute;

transform: scale(0);

transition: all .7s ease-in-out;
}

.slide img {
    width: 100%;
    height: 100%;
}

.nav label {
    width: 200px;
    height: 100%;
    display: none;
    position: absolute;

opacity: 0;
    z-index: 9;
    cursor: pointer;

transition: opacity .2s;

color: #FFF;
    font-size: 156pt;
    text-align: center;
    line-height: 380px;
    font-family: "Varela Round", sans-serif;
    background-color: rgba(255, 255, 255, .3);
    text-shadow: 0px 0px 15px rgb(119, 119, 119);
}

.slide:hover + .nav label { opacity: 0.5; }

.nav label:hover { opacity: 1; }

.nav .next { right: 0; }

input:checked + .slide-container  .slide {
    opacity: 1;

transform: scale(1);

transition: opacity 1s ease-in-out;
}

input:checked + .slide-container .nav label { display: block; }

.nav-dots {
	width: 100%;
	bottom: 9px;
	height: 11px;
	display: block;
	position: absolute;
	text-align: center;
}

.nav-dots .nav-dot {
	top: -5px;
	width: 11px;
	height: 11px;
	margin: 0 4px;
	position: relative;
	border-radius: 100%;
	display: inline-block;
	background-color: rgba(0, 0, 0, 0.6);
}

.nav-dots .nav-dot:hover {
	cursor: pointer;
	background-color: rgba(0, 0, 0, 0.8);
}

input#img-1:checked ~ .nav-dots label#img-dot-1,
input#img-2:checked ~ .nav-dots label#img-dot-2,
input#img-3:checked ~ .nav-dots label#img-dot-3,
input#img-4:checked ~ .nav-dots label#img-dot-4,
input#img-5:checked ~ .nav-dots label#img-dot-5,
input#img-6:checked ~ .nav-dots label#img-dot-6 {
	background: rgba(0, 0, 0, 0.8);
}

20

Image Slider

By: Nethan Pogi

body {
    margin:0;
    padding:0;
    background-color:#333;
    font-family:verdana;
}

.smoke {
    position:absolute;
    top:50%;
    lefT:50%;
    transform:translate(-50%,-50%);
}

.smoke ul {
    margin:0;
    padding:0;
    display:flex;
    
}

.smoke ul li {
    list-style:none;
    font-weight:bold;
    letter-spacing:10px;
    filter:blur(1px);
    color:#fff;
    font-size:6em;
    display: inline-block;
}

.smoke ul:hover li {
    animation: smoke 2s linear forwards;
}

@keyframes smoke {
    0% {
        transform: rotate(0deg) translateY(0px);
        opacity: 1;
        filter:blur(1px);
    }
    100% {
      transform: rotate(45deg) translateY(-200px);
        opacity: 0;
        filter:blur(20px);
    }
}

.smoke ul li:nth-child(1){
    animation-delay:0s
}
.smoke ul li:nth-child(2){
    animation-delay:.4s
}
.smoke ul li:nth-child(3){
    animation-delay:.8s
}
.smoke ul li:nth-child(4){
    animation-delay:1.2s
}
.smoke ul li:nth-child(5){
    animation-delay:1.6s
}

19

Smoke Animation Pure CSS Hover Text

By: pixeldev

19

Border Style Value

By: Nethan Pogi

19

Fixed Header Responsive Table

By: pixeldev

<section id="hexes">
<div class="sectionheader">	<h1>The Honey Comb</h1><div class="beaker"></div></div>	
    <article>

</article>
</section>

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li, 
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}

#hexes {
	width: 1000px;
	overflow: hidden;
	padding-bottom: 70px;
	position: relative;
	margin: 0 auto;
	margin-bottom: 2.5em;
	background: rgb(236, 236, 236);

-webkit-transition: all ease 500ms;
	-moz-transition: all ease 500ms;
	-o-transition: all ease 500ms;
	-ms-transition: all ease 500ms;
	transition: all ease 500ms;
}

h1 {
	font-family: bebas_neueregular ,sans-serif;
	font-size: 1.75em;
	padding: 0.2em 0 0.2em 0.2em;
	color: #FFF0B2;
	text-shadow: 0 0.06em 0 #424242;
	position: relative;
}

#hexes h1 {
	background: #FFB84D;
}

.sectionheader {
	position: relative;
}

.hex_item {
	width: 200px;
	height: 230px;
	position: relative;
	display: inline-block;
}

.hexagon2 {
	position: absolute;
	width: 200px;
	height: 400px;
	top: -85px;
}

.hexagon {
	overflow: hidden;
	visibility: hidden;

-webkit-transform: rotate(120deg);
	-moz-transform: rotate(120deg);
	-o-transform: rotate(120deg);
	-ms-transform: rotate(120deg);
	transform: rotate(120deg);
	cursor: pointer;
}

.hexagon-in1 {
	overflow: hidden;
	width: 100%;
	height: 100%;

-webkit-transform: rotate(-60deg);
	-moz-transform: rotate(-60deg);
	-o-transform: rotate(-60deg);
	-ms-transform: rotate(-60deg);
	transform: rotate(-60deg);
}

.hexagon-in2 {
	-webkit-box-shadow: inset 0 0 0 200px #FFE066;
	box-shadow: inset 0 0 0 200px rgba(376, 218, 212, 0.48);
	overflow: hidden;
	width: 100%;
	height: 100%;
	background-repeat: no-repeat;
	background-position: 50%;

-webkit-background-size: 125%;
	-moz-background-size: 125%;
	background-size: 125%;
	visibility: visible;

-webkit-transform: rotate(-60deg);
	-moz-transform: rotate(-60deg);
	-o-transform: rotate(-60deg);
	-ms-transform: rotate(-60deg);
	transform: rotate(-60deg);

-webkit-transition: all 0.5s ease;
	-moz-transition: all 0.5s ease;
	-o-transition: all 0.5s ease;
	-ms-transition: all 0.5s ease;
	transition: all 0.5s ease;
}

.hexagon-in2:hover {
	-webkit-box-shadow: inset 0 0 0 0px #B0DAD4;
	box-shadow: inset 0 0 0 0px #FFE066;
}

#hexes article {
	padding-top: 1em;
	width: 820px;
	margin: 0 auto;
}

.hex_item:nth-child(7n-2) {
	margin-left: 101px;
}

.hex_item:nth-child(n+5) {
	margin-top: -55px;
}

@media (max-width: 1015px) {
	#hexes {
	width: 100%;
}

}

@media (max-width: 820px) {
	.hex_item:nth-child(5n-1) {
	margin-left: 102px;
}

.hex_item:nth-child(n+4) {
	margin-top: -62px;
}

.hex_item:nth-child(7n-2) {
	margin-left: 0px;
}

.hex_item:nth-child(n+5) {
	margin-top: -56px;
}

#hexes article {
	width: 610px;
}

}

@media (max-width: 640px) {
	#hexes article {
	width: 405px;
}

.hex_item:nth-child(5n-1) {
	margin-left: 0px;
}

.hex_item:nth-child(3n) {
	margin-left: 102px;
}

.hex_item:nth-child(n+3) {
	margin-top: -56px;
}

}

@media (max-width: 450px) {
	#hexes article {
	width: 300px;
}

.hex_item:nth-child(3n) {
	margin-left: 0px;
}

.hex_item:nth-child(2n) {
	margin-left: 102px;
}

.hex_item:nth-child(n+2) {
	margin-top: -56px;
}

}

19

Honeycomb with hover effect Pure CSS

By: pixeldev

<section class="hero-section">
  <div class="card-grid">
    <a class="card" href="#">
      <div class="card__background" style="background-image: url(https://images.unsplash.com/photo-1557177324-56c542165309?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80)"></div>
      <div class="card__content">
        <p class="card__category">Category</p>
        <h3 class="card__heading">Example Card Heading</h3>
      </div>
    </a>
    <a class="card" href="#">
      <div class="card__background" style="background-image: url(https://images.unsplash.com/photo-1557187666-4fd70cf76254?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60)"></div>
      <div class="card__content">
        <p class="card__category">Category</p>
        <h3 class="card__heading">Example Card Heading</h3>
      </div>
    </a>
    <a class="card" href="#">
      <div class="card__background" style="background-image: url(https://images.unsplash.com/photo-1556680262-9990363a3e6d?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60)"></div>
      <div class="card__content">
        <p class="card__category">Category</p>
        <h3 class="card__heading">Example Card Heading</h3>
      </div>
    </li>
    <a class="card" href="#">
      <div class="card__background" style="background-image: url(https://images.unsplash.com/photo-1557004396-66e4174d7bf6?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60)"></div>
      <div class="card__content">
        <p class="card__category">Category</p>
        <h3 class="card__heading">Example Card Heading</h3>
      </div>
    </a>
  <div>
</section>

:root{
  --background-dark: #1b1f22;
  --spacing-s: 8px;
  --spacing-m: 16px;
  --spacing-l: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 64px;
  --text-light: rgba(255,255,255,0.75);
  --text-lighter: rgba(255,255,255,0.9);
  --width-container: 1200px;
}

*{
  border: 0;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html{
  height: 100%;
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
}

body{
  height: 100%;
}

.hero-section{
  align-items: center;
  background: var(--background-dark);
  display: flex;
  min-height: 100%;
  justify-content: center;
  padding: var(--spacing-xxl) var(--spacing-l);
}

.card-grid{
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  grid-column-gap: var(--spacing-l);
  grid-row-gap: var(--spacing-l);
  max-width: var(--width-container);
  width: 100%;
}

@media(min-width: 540px){
  .card-grid{
    grid-template-columns: repeat(2, 1fr); 
  }
}

@media(min-width: 960px){
  .card-grid{
    grid-template-columns: repeat(4, 1fr); 
  }
}

.card{
  list-style: none;
  position: relative;
}

.card:before{
  content: '';
  display: block;
  padding-bottom: 150%;
  width: 100%;
}

.card__background{
  background-size: cover;
  background-position: center;
  border-radius: var(--spacing-l);
  bottom: 0;
  filter: brightness(0.75) saturate(1.2) contrast(0.85);
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transform-origin: center;
  trsnsform: scale(1) translateZ(0);
  transition: 
    filter 200ms linear,
    transform 200ms linear;
}

.card:hover .card__background{
  transform: scale(1.05) translateZ(0);
}

.card-grid:hover > .card:not(:hover) .card__background{
  filter: brightness(0.5) saturate(0.5) contrast(1.2) blur(20px);
}

.card__content{
  left: 0;
  padding: var(--spacing-l);
  position: absolute;
  top: 0;
}

.card__category{
  color: var(--text-light);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: var(--spacing-m);
  text-transform: uppercase;
}

.card__heading{
  color: var(--text-lighter);
  font-size: 2rem;
  text-shadow: 2px 2px 20px rgba(0,0,0,0.2);
  line-height: 1.2;
  word-spacing: 100vw;
}

18

Filtered Cards Animation

By: Nethan Pogi

/* FONT IMPORT */
@import url('https://fonts.googleapis.com/css?family=Ubuntu:700&subset=latin,latin-ext');

/* VARIABLES (converted manually) */
:root {
  --hover: all 0.2s ease-in;
  --slide: all 0.5s 0.1s cubic-bezier(0.55, 0, 0.1, 1);
  --grey: #4f4f4f;
  --white: #ffffff;
  --green: #39bda7;
  --black-05: rgba(0, 0, 0, 0.05);
}

/* BASE STYLES */
body {
  background: url('http://thecodeplayer.com/uploads/media/geometry.png');
  font-family: 'Ubuntu', sans-serif;
}

a {
  text-decoration: none;
  color: #4f4f4f;
}

/* BUTTON CONTAINER */
.button-container {
  padding: 100px 0;
  text-align: center;
}

/* BUTTON STYLES */
.button {
  display: inline-block;
  padding: 12px 24px;
  border: 1px solid #4f4f4f;
  border-radius: 4px;
  transition: all 0.2s ease-in;
  position: relative;
  overflow: hidden;
}

/* PSEUDO ELEMENTS */
.button::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%) scaleY(1) scaleX(1.25);
  top: 100%;
  width: 140%;
  height: 180%;
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: 50%;
  display: block;
  transition: all 0.5s 0.1s cubic-bezier(0.55, 0, 0.1, 1);
  z-index: -1;
}

.button::after {
  content: "";
  position: absolute;
  left: 55%;
  transform: translateX(-50%) scaleY(1) scaleX(1.45);
  top: 180%;
  width: 160%;
  height: 190%;
  background-color: #39bda7;
  border-radius: 50%;
  display: block;
  transition: all 0.5s 0.1s cubic-bezier(0.55, 0, 0.1, 1);
  z-index: -1;
}

/* HOVER STATE */
.button:hover {
  color: #ffffff;
  border: 1px solid #39bda7;
}

.button:hover::before {
  top: -35%;
  background-color: #39bda7;
  transform: translateX(-50%) scaleY(1.3) scaleX(0.8);
}

.button:hover::after {
  top: -45%;
  background-color: #39bda7;
  transform: translateX(-50%) scaleY(1.3) scaleX(0.8);
}

17

Button Hover v2 Effect Using Pure CSS

By: pixeldev

<section class="accordion">
  <div class="tab">
    
    <label for="cb1" class="tab__label">Checkbox</label>
    <div class="tab__content">
      <p>Pure CSS accordion based on the "input:checked + label" style trick.</p>
    </div>
  </div>
  <div class="tab">
    
    <label for="cb2" class="tab__label">Open multiple</label>
    <div class="tab__content">
      <p>Using <code><input type="checkbox"></code> allows to have several tabs open at the same time.</p>
    </div>
  </div>
</section>

<section class="accordion accordion--radio">
  <div class="tab">
    
    <label for="rd1" class="tab__label">Radio</label>
    <div class="tab__content">
      <p>If you want to have only one tab open, you can use <code><input type="radio"></code>.</p>
    </div>
  </div>
  <div class="tab">
    
    <label for="rd2" class="tab__label">Open single</label>
    <div class="tab__content">
      <p>But if you wanna close the opened tab, you must add a "close" button somewhere, like the one below, that is just another styled radio input.</p>
    </div>
  </div>
  <div class="tab">
    
    <label for="rd3" class="tab__close">Close open tab ×</label>
  </div>
</section>

:root {
  --primary: #227093;
  --secondary: #ff5252;
  --background: #eee;
  --highlight: #ffda79;
  /* Theme color */
  --theme: var(--primary);
}
*, *::before, *::after {
  box-sizing: border-box;
}
body {
  display: grid;
  place-content: center;
  place-items: start;
  grid-template-columns: repeat(auto-fit, min(100%, 30rem));
  gap: 1rem;
  min-height: 100vh;
  margin: 0;
  padding: 1rem;
  color: var(--primary);
  background: var(--background);
}

/* Core styles/functionality */
.tab {
  position: relative;
}
.tab input {
  position: absolute;
  opacity: 0;
  z-index: -1;
}
.tab__content {
  max-height: 0;
  overflow: hidden;
  transition: all 0.35s;
}
.tab input:checked ~ .tab__content {
  max-height: 10rem;
}

/* Visual styles */
.accordion {
  color: var(--theme);
  border: 2px solid;
  border-radius: 0.5rem;
  overflow: hidden;
}
.tab__label,
.tab__close {
  display: flex;
  color: white;
  background: var(--theme);
  cursor: pointer;
}
.tab__label {
  justify-content: space-between;
  padding: 1rem;
}
.tab__label::after {
  content: "\276F";
  width: 1em;
  height: 1em;
  text-align: center;
  transform: rotate(90deg);
  transition: all 0.35s;
}
.tab input:checked + .tab__label::after {
  transform: rotate(270deg);
}
.tab__content p {
  margin: 0;
  padding: 1rem;
}
.tab__close {
  justify-content: flex-end;
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}
.accordion--radio {
  --theme: var(--secondary);
}

/* Arrow animation */
.tab input:not(:checked) + .tab__label:hover::after {
  animation: bounce .5s infinite;
}
@keyframes bounce {
  25% {
    transform: rotate(90deg) translate(.25rem);
  }
  75% {
    transform: rotate(90deg) translate(-.25rem);
  }
}

17

Pure CSS Accordion

By: Nethan Pogi

/* Change colors here */
:root{
  --ccs-bg:#ffffff;
  --ccs-ink:#0b1020;
  --ccs-card:#0b0f1a;
  --ccs-glow:#b79cff;
  --ccs-glow2:#7c5cff;
}
body{
  margin:0;
  min-height:100vh;
  display:grid;
  place-items:center;
  background:#fff;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
}

/* Card */
.ccs-electricCard{
  width:min(340px, 86vw);
  padding:12px 18px;
  border-radius:22px;
  background:
    radial-gradient(140% 100% at 20% 10%, rgba(183,156,255,.18), transparent 60%),
    radial-gradient(120% 90% at 80% 90%, rgba(124,92,255,.16), transparent 55%),
    var(--ccs-card);
  position:relative;
  overflow:hidden;
  box-shadow:
    0 18px 50px rgba(0,0,0,.22),
    0 0 0 1px rgba(255,255,255,.06) inset;
}

/* Neon border layer (base glow) */
.ccs-electricCard::before{
  content:"";
  position:absolute;
  inset:-3px;
  border-radius:inherit;
  background:
    conic-gradient(from 0deg,
      transparent 0 8%,
      rgba(183,156,255,.85) 10%,
      transparent 16%,
      rgba(183,156,255,.55) 26%,
      transparent 34%,
      rgba(124,92,255,.95) 44%,
      transparent 52%,
      rgba(183,156,255,.75) 66%,
      transparent 74%,
      rgba(124,92,255,.85) 86%,
      transparent 100%);
  filter: blur(7px);
  opacity:.9;
  animation: ccs-spin 3.2s linear infinite;
  /* show only the ring */
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding:3px;
}

/* "Electric" crackle layer (jitter + little sparks) */
.ccs-electricCard::after{
  content:"";
  position:absolute;
  inset:-6px;
  border-radius:inherit;
  pointer-events:none;

/* Tiny sparks around the edges (random-ish via multiple gradients) */
  background:
    radial-gradient(8px 6px at 10% 8%, rgba(183,156,255,.9), transparent 60%),
    radial-gradient(10px 7px at 86% 12%, rgba(124,92,255,.9), transparent 60%),
    radial-gradient(8px 6px at 92% 58%, rgba(183,156,255,.85), transparent 60%),
    radial-gradient(9px 7px at 14% 78%, rgba(124,92,255,.9), transparent 60%),
    radial-gradient(8px 6px at 55% 92%, rgba(183,156,255,.85), transparent 60%),
    conic-gradient(from 90deg, rgba(183,156,255,.18), transparent 18%, rgba(124,92,255,.22), transparent 60%, rgba(183,156,255,.18));
  filter: blur(1px) drop-shadow(0 0 12px rgba(183,156,255,.55));
  opacity:.9;

/* ring-only mask again */
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding:1px;

animation: ccs-zap 320ms steps(3, end) infinite;
}

/* Content */
.ccs-pill{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:8px 12px;
  border-radius:999px;
  font-weight:700;
  letter-spacing:.08em;
  font-size:12px;
  color:rgba(255,255,255,.85);
  background:rgba(255,255,255,.08);
  box-shadow: 0 0 0 1px rgba(255,255,255,.10) inset;
}

.ccs-title{
  margin:22px 0 8px;
  font-size:34px;
  line-height:1.05;
  color:#fff;
  letter-spacing:-.02em;
}

.ccs-sub{
  margin:0;
  max-width:26ch;
  color:rgba(255,255,255,.62);
  font-size:14px;
  line-height:1.45;
}

/* Animations */
@keyframes ccs-spin{
  to{ transform: rotate(360deg); }
}

/* quick jitter to feel "electric" */
@keyframes ccs-zap{
  0%   { transform: translate(0,0) rotate(0deg); opacity:.85; }
  35%  { transform: translate(1px,-1px) rotate(.4deg); opacity:1; }
  70%  { transform: translate(-1px,1px) rotate(-.4deg); opacity:.92; }
  100% { transform: translate(0,0) rotate(0deg); opacity:.85; }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  .ccs-electricCard::before,
  .ccs-electricCard::after{ animation:none; }
}

17

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