The Power of Pure CSS - No JavaScript Needed

body {
  text-align:center;
}
header {
  display:inline-table;
  vertical-align:middle;
  margin:1em ;
  padding:0.5em 1em;
  background:
    linear-gradient(
      to right,
      transparent 20%,
      turquoise 20%,
      turquoise 80%,
      transparent 80%
    ) bottom no-repeat,
    linear-gradient(
      to top,
      turquoise 0%,
      turquoise 300%
    ) right 300% no-repeat,
    linear-gradient(
      to right,
      turquoise 0%,
      turquoise 100%
    )   9000% 0 no-repeat,
    linear-gradient(
      to top,
      turquoise 0%,
      turquoise 300%
    ) left 9000% no-repeat
    ;  
  transition:background-size 2s ease-in;
}
header, header ~ header:hover {
  background-size: 
    100% 8px, 
    3px 0, 
    3px 3px, 
    3px 0;

}
header:hover, header ~ header {
  background-size: 
    200% 3px , 
    3px 100%, 
    100% 3px, 
    3px 100%;
  transition:background-size 2s ease-in-out;
}

span {
  font-size:4em;
  display:inline-block;
  vertical-align:middle;
  background:turquoise;
  border-radius:100%;
  box-shadow:0 0 5px;
}

40

Border Animation

By: pixeldev

40

Countdown Timer

By: pixeldev

*{
    margin: 0;
    padding: 0;
    font-family: 'lato';
    list-style: none;
    text-decoration: none;
}
body{
    background-color: #fcdc29;
}

.wrapper{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.mainMenu{
    width: 250px;
    display: block;
    border-radius: 10px;
    overflow: hidden;
}
.item{
    border-top: 1px solid #ef584a;
    overflow: hidden;
}
.btn{
    display: block;
    padding: 15px 20px;
    background-color: #ff6f61;
    color: #fff;
    position: relative;

}
.btn:before{
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right:8px solid transparent;
    border-top:10px solid #ff6f61;
    right: 15px;
    bottom: -10px;
    z-index: 9;
    
}
.btn i {
    margin-right: 10px;
}
.subMenu{
    background: #273057;
    overflow: hidden;
    transition: max-height 0.7s;
    max-height: 0;
}
.subMenu a{
    display: block;
    padding: 15px 20px;
    color: #fff;
    font-size: 14px;
    border-bottom: 1px solid #394c7f;
    position: relative;
    
}
.subMenu a:before{
    content: '';
    opacity: 0;
    transition: opacity 0.3s;

}
.subMenu a:hover:before{
    content: '';
    position: absolute;
    height: 0;
    width: 6px;
    left: 0;
    top:0;
    opacity: 1;
    /* background-color: #d8d824; */
    border-top: 24px solid transparent;
    border-left: 11px solid #fcdc29;
    border-bottom: 24px solid transparent;
}
.subMenu a:after{
    content: '';
    opacity: 0;
    transition: opacity 0.3s;

}
.subMenu a:hover:after{
    content: '';
    position: absolute;
    height: 0;
    width: 6px;
    right: 0px;
    top:0;
    opacity: 1;
    /* background-color: #d8d824; */
    border-top: 24px solid transparent;
    border-right: 11px solid #fcdc29;
    border-bottom: 24px solid transparent;
}
.subMenu a:hover{
    background: #273057;
    background: -moz-linear-gradient(top, #273057 0%, #273057 50%, #394c7f 51%, #394c7f 100%);
    background: -webkit-linear-gradient(top, #273057 0%,#273057 50%,#394c7f 51%,#394c7f 100%);
    background: linear-gradient(to bottom, #273057 0%,#273057 50%,#394c7f 51%,#394c7f 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#273057', endColorstr='#394c7f',GradientType=0 );
    transition: all 0.3s;
    border-bottom: 1px solid #394c7f;
}
.subMenu a:last-child{
    border:none;
}
.item:target .subMenu{
    max-height: 10em;
}

/*  footer   */
footer {
    background-color: #222;
    color: #fff;
    font-size: 14px;
    bottom: 0;
    position: fixed;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 999;
}

footer p {
    margin: 10px 0;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida  Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}
footer .fa-heart{
    color: red;
}
footer .fa-dev{
    color: #fff;
}
footer .fa-twitter-square{
  color:#1da0f1;
}
footer .fa-instagram{
  color: #f0007c;
}
fotter .fa-linkedin{
  color:#0073b1;
}
footer .fa-codepen{
  color:#fff
}
footer a {
    color: #3c97bf;
    text-decoration: none;
  margin-right:5px;
}
.youtubeBtn{
    position: fixed;
    left: 50%;
  transform:translatex(-50%);
    bottom: 45px;
    cursor: pointer;
    transition: all .3s;
    vertical-align: middle;
    text-align: center;
    display: inline-block;
}
.youtubeBtn i{
   font-size:20px;
  float:left;
}
.youtubeBtn a{
    color:#ff0000;
    animation: youtubeAnim 1000ms linear infinite;
  float:right;
}
.youtubeBtn a:hover{
  color:#c9110f;
  transition:all .3s ease-in-out;
  text-shadow: none;
}
.youtubeBtn i:active{
  transform:scale(.9);
  transition:all .3s ease-in-out;
}
.youtubeBtn span{
    font-family: 'Lato';
    font-weight: bold;
    color: #000;
    display: block;
    font-size: 12px;
    float: right;
    line-height: 20px;
    padding-left: 5px;
  
}

@keyframes youtubeAnim{
  0%,100%{
    color:#c9110f;
  }
  50%{
    color:#ff0000;
  }
}
/* footer  */

39

Awesome accordion menu using only HTML & CSS

By: pixeldev

39

Heart animation

By: pixeldev

.wheel{
	border: 2px solid black;
	border-radius: 50%;
	margin-left: 50px;
	position: absolute;
	width: 55vw;
	height: 55vw;
	max-height: 500px;
	max-width: 500px;
	animation-name: wheel;
	animation-duration: 10s;/*Time of the animation*/
	animation-iteration-count: infinite;/*How many times the animation repeats*/
	animation-timing-function: linear;/*How the animation should progress over time*/
}

/********LINES********/

.line{
	
	background-color: black;
	width: 50%;
	height: 2px;
	position: absolute;
	left: 50%;
	top: 50%;
	transform-origin: 0% 0%;
}

/******Line types*********/

.line:nth-of-type(2){
	transform: rotate(60deg);
}

.line:nth-of-type(3){
	transform: rotate(120deg);
}

.line:nth-of-type(4){
	transform: rotate(180deg);
}

.line:nth-of-type(5){
	transform: rotate(240deg);
}

.line:nth-of-type(6){
	transform: rotate(300deg);
}

/********CABINS**********/

.cabin{
	background-color: red;
	width: 20%;
	height: 20%;
	position: absolute;
	border: 2px solid;
	transform-origin: 50% 0%;
	animation: cabins 10s ease-in-out infinite;/*animation-name, animation-duration, animation-timing-function, animation-iteration-count*/
}

/*******Cabin types*********/

.cabin:nth-of-type(1){
	right: -8.5%;
	top: 50%;
}

.cabin:nth-of-type(2){
	right: 17%;
	top: 93.5%;
}

.cabin:nth-of-type(3){
	right: 67%;
	top: 93.5%;
}

.cabin:nth-of-type(4){
	left: -8.5%;
	top: 50%;
}

.cabin:nth-of-type(5){
	left: 17%;
	top: 7%;
}

.cabin:nth-of-type(6){
	right: 17%;
	top: 7%;
}

/**********K E Y F R A M E S*************/

@keyframes wheel{
	0%{
		transform: rotate(0deg);
	}
	
	100%{
		transform: rotate(360deg);
	}
}

@keyframes cabins{
	0%{
		transform: rotate(0deg);		
	}
	
	25%{
		background-color: yellow;
	}
	
	50%{
		background-color: purple;
	}
	
	75%{
		background-color: yellow;
	}
	
	100%{
		transform: rotate(-360deg);
	}	
}

39

Ferris Wheel Animation

By: pixeldev

38

Mouse Scroll Down Animation

By: pixeldev

38

Rainbow Box

By: pixeldev

38

Simple gradient animation

By: pixeldev

37

Bouncing ball v3

By: pixeldev

36

Pulsating heart

By: pixeldev

* {
    box-sizing: border-box;
}

#overlay {
    background: #f0f0f0;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
}
.container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.circle {
    border-radius: 50%;
}

.bg {
    width: 300px;
    height: 300px;
    background: #000;
    border: solid 5px #0088ff;
}
.outermost {
    width: 255px;
    height: 255px;
    border: solid 10px rgba(0, 0, 0, 0);
    border-bottom: solid 10px #0088ff;
    border-left: solid 10px #0088ff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: spin 5s linear infinite;
}
.outer {
    width: 250px;
    height: 250px;
    border: solid 5px #0088ff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.middle {
    width: 215px;
    height: 215px;
    border: solid 12px rgba(0, 0, 0, 0);
    border-bottom: solid 12px #005aa8;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: spin2 3.5s linear infinite reverse;
}
.middle2 {
    width: 215px;
    height: 215px;
    border: solid 6px rgba(0, 0, 0, 0);
    border-top: solid 6px #005aa8;
    border-right: solid 6px #005aa8;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: spin 3.5s linear infinite reverse;
}
.middle3 {
    width: 205px;
    height: 205px;
    border: solid 30px rgba(0, 0, 0, 0);
    border-top: solid 30px #0088ff4b;
    border-right: solid 30px #0088ff4b;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: spin 3.5s linear infinite reverse;
}
.inner {
    width: 140px;
    height: 140px;
    border: solid 5px #0088ff;
    border-bottom: solid 5px rgba(0, 0, 0, 0);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    animation: spin2 2s linear infinite;
}
.innermost3 {
    width: 35px;
    height: 35px;
    background: #0088ff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.innermost2 {
    width: 80px;
    height: 80px;
    border: solid 13px #0088ff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.innermost {
    width: 115px;
    height: 115px;
    border: solid 13px #0088ff;
    border-top: solid 13px rgba(0, 0, 0, 0);
    border-bottom: solid 13px rgba(0, 0, 0, 0);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: spin 1s linear infinite reverse;
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}
@keyframes spin2 {
    0% {
        transform: translate(-50%, -50%) rotate(45deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(405deg);
    }
}

36

J.A.R.V.I.S Animation

By: pixeldev

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

body{
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
	background: #1c1f2f;
}

.container{
	position: relative;
	-webkit-box-reflect: below 1px linear-gradient(transparent,#0001);
}

.container .loader{
	position: relative;
	width: 200px;
	height: 200px;
	border-radius: 50%;
	border: 20px solid transparent;
	border-bottom: 20px solid #06c8f0;
	border-right: 20px solid #06c8f0;
	transform: rotate(45deg);
	animation: animate 4s ease-in-out infinite;
}

@keyframes animate{
	0%{
		transform: rotate(0deg);
	}

50%{
		transform: rotate(90deg);
	}

100%{
		transform: rotate(0deg);
	}
}

.container .loader .ball{
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	border-radius: 50%;
	animation: animateBell 4s ease-in-out infinite;
}

@keyframes animateBell{
	0%{
		transform: rotate(0deg);
	}

50%{
		transform: rotate(180deg);
	}

100%{
		transform: rotate(0deg);
	}
}

.container .loader .ball:before{
	content: '';
	position: absolute;
	bottom: 50%;
	right: 15px;
	width: 40px;
	height: 40px;
	background: #fff;
	border-radius: 50%;
	transform: translateY(-50%);
}

36

All

Border Animation

By: pixeldev

Countdown Timer

By: pixeldev

Awesome accordion menu using only HTML & CSS

By: pixeldev

Heart animation

By: pixeldev

Ferris Wheel Animation

By: pixeldev

Mouse Scroll Down Animation

By: pixeldev

Rainbow Box

By: pixeldev

Simple gradient animation

By: pixeldev

Bouncing ball v3

By: pixeldev

Pulsating heart

By: pixeldev

J.A.R.V.I.S Animation

By: pixeldev

Perpetual Animation

By: pixeldev