CSS Code Only

* {
    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);
    }
}

24

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

By: rald_dev

24

Heart animation

By: rald_dev

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #050801;
    font-family: 'Raleway', sans-serif;
    font-weight: bold;
}
a{
    position: relative;
    display: inline-block;
    padding: 25px 30px;
    margin: 40px 0;
    color: #03e9f4;
    text-decoration: none;
    text-transform: uppercase;
    transition: 0.5s;
    letter-spacing: 4px;
    overflow: hidden;
    margin-right: 50px;
   
}
a:hover{
    background: #03e9f4;
    color: #050801;
    box-shadow: 0 0 5px #03e9f4,
                0 0 25px #03e9f4,
                0 0 50px #03e9f4,
                0 0 200px #03e9f4;
     -webkit-box-reflect:below 1px linear-gradient(transparent, #0005);
}
a:nth-child(1){
    filter: hue-rotate(270deg);
}
a:nth-child(2){
    filter: hue-rotate(110deg);
}
a span{
    position: absolute;
    display: block;
}
a span:nth-child(1){
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg,transparent,#03e9f4);
    animation: animate1 1s linear infinite;
}
@keyframes animate1{
    0%{
        left: -100%;
    }
    50%,100%{
        left: 100%;
    }
}
a span:nth-child(2){
    top: -100%;
    right: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg,transparent,#03e9f4);
    animation: animate2 1s linear infinite;
    animation-delay: 0.25s;
}
@keyframes animate2{
    0%{
        top: -100%;
    }
    50%,100%{
        top: 100%;
    }
}
a span:nth-child(3){
    bottom: 0;
    right: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg,transparent,#03e9f4);
    animation: animate3 1s linear infinite;
    animation-delay: 0.50s;
}
@keyframes animate3{
    0%{
        right: -100%;
    }
    50%,100%{
        right: 100%;
    }
}

a span:nth-child(4){
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg,transparent,#03e9f4);
    animation: animate4 1s linear infinite;
    animation-delay: 0.75s;
}
@keyframes animate4{
    0%{
        bottom: -100%;
    }
    50%,100%{
        bottom: 100%;
    }
}

24

Glowing buttons

By: rald_dev

body{
			margin: 0;
			padding: 0;
			display: flex;
			justify-content: center;
			align-items: center;
			background: #29a329;
		}
		.container{
			margin-top: 100px;
			width: 400px;
			height: 400px;
			position: relative;
			border-radius: 50%;
			animation: draw 5s linear infinite;
			}
		.trace{
			position: absolute;
			width: 390px;
			height:390px;
			border-radius: 50%;
			border: 10px solid #fff;
			border-right: 10px solid transparent;
			border-bottom: 10px solid transparent;
			transform: rotate(-45deg);
		}
		.pencil{
			position: absolute;
			height: 100%;
			width: 82px;
			/*background: green;*/
			left: 41%;
		}
		.rubber{
			width: 82px;
			height: 50px;
			background: violet;
			border-radius:15px 15px 0 0 ;
			margin-top: -6px;
		}
		.joint{
			width: 82px;
			height: 60px;
			background: black;
		}
		.stick{
			height: 58%;
			background: linear-gradient(to right, #cccc00  27px, #1a75ff 0 55px, #cc0066 20px);
		}
		.pencil-top{
			height: 64px;
			background: black;
			clip-path: polygon(0 0, 50% 100%, 100% 0);
		}
		.pencil-tip{
			background: #fff;
			height: 20px;
			clip-path: polygon(35% 0, 50% 100%, 64.5% 0);
			margin-top: -19px;
		}

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

24

Pencil animation

By: rald_dev

24

Bouncing ball v3

By: rald_dev

24

Line Animation

By: rald_dev

24

Pulsating heart

By: rald_dev

body { background: #222; }
.box {
  background-color: #61ab20;
  margin: 0 auto;
  width: 500px;
  height: 300px;
  position: relative;
  box-shadow: inset 0 0 3px #000;
  border-radius: 5px;
  border: 1px solid #111;
  overflow: hidden;
}
.box b {
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: #3673cf;
  box-shadow: inset -5px -5px 5px rgba(0,0,0,.6), 15px 15px 2px rgba(0,0,0,.04);
  position: absolute;
  -webkit-animation: moveX 3.05s linear 0s infinite alternate, moveY 3.4s linear 0s infinite alternate;
  -moz-animation: moveX 3.05s linear 0s infinite alternate, moveY 3.4s linear 0s infinite alternate;
  -o-animation: moveX 3.05s linear 0s infinite alternate, moveY 3.4s linear 0s infinite alternate;
  animation: moveX 3.05s linear 0s infinite alternate, moveY 3.4s linear 0s infinite alternate;
}

@-webkit-keyframes moveX {
  from { left: 0; } to { left: 480px; }
}
@-moz-keyframes moveX {
  from { left: 0; } to { left: 480px; }
}
@-o-keyframes moveX {
  from { left: 0; } to { left: 480px; }
}
@keyframes moveX {
  from { left: 0; } to { left: 480px; }
}
@-webkit-keyframes moveY {
  from { top: 0; } to { top: 280px; }
}
@-moz-keyframes moveY {
  from { top: 0; } to { top: 280px; }
}
@-o-keyframes moveY {
  from { top: 0; } to { top: 280px; }
}
@keyframes moveY {
  from { top: 0; } to { top: 280px; }
}

All

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

By: rald_dev

Heart animation

By: rald_dev

Glowing buttons

By: rald_dev

Pencil animation

By: rald_dev

Bouncing ball v3

By: rald_dev

Line Animation

By: rald_dev

Pulsating heart

By: rald_dev

CSS Bouncing Ball

By: rald_dev

Mouse Scroll Down Animation

By: rald_dev

Flickering Animation

By: rald_dev

scroll down line animation

By: rald_dev

Rainbow Box

By: rald_dev