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HTML

CSS

CSS Base

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JavaScript

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HTML

              
                <div class="masthead segment">
  <div class="ui page grid">
    <div class="column">
      <div class="introduction">
        <h1 class="ui inverted header">
          <span class="text">Perspective background from old <a href="https://www.semantic-ui.com/" target="_new">Semantic UI</a> website</span>
        </h1>        
        <div class="ui hidden divider"></div>        
      </div>      
    </div>
  </div>
</div>
              
            
!

CSS

              
                /* 

    HEY!
    Check my new pen "Amazing Perspective Walking Background"
    - just CSS
    - very, very simple
  
    https://codepen.io/tonetlds/pen/yOdZLx

*/


/*--------------
    splash
---------------*/

body {
  position: relative;
  overflow: hidden;
  /*  background: #111111 url(https://semantic-ui.com/images/bg-sky.jpg);*/
  background-size: cover;
  text-align: center;
  padding: 0em;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 0px;
  border-bottom: none;
  background-color: #00B5AD;
  background-image: -webkit-radial-gradient(farthest-corner, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.95));
  background-image: radial-gradient(farthest-corner, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.95));
}

.text {
  box-sizing: border-box;
  color: rgb(255, 255, 255);
  display: inline;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 30px;
  font-weight: normal;
  height: auto;
  text-align: center;
  text-shadow: rgba(0, 0, 0, 0.2) 0px 0px 10px;
  text-transform: none;
  width: auto;
  z-index: 10000;
}

.text a {
  color: aqua;
  font-weight: bold;
}

body .grid {
  margin: 0em;
  padding: 15rem 0em;
}

.following.bar,
body {
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  -o-transform-style: preserve-3d;
  -ms-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
  -ms-transition: background-color 3s ease-in-out 2s;
  -moz-transition: background-color 3s ease-in-out 2s;
  -webkit-transition: background-color 3s ease-in-out 2s;
  transition: background-color 3s ease-in-out 2s;
  -webkit-perspective: 1000px;
  -moz-perspective: 1000px;
  -o-perspective: 1000px;
  -ms-perspective: 1000px;
  perspective: 1000px;
}

.following.bar iframe.github {
  margin-top: 0px;
}

.pushed body,
.pushed .following.bar {
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
}

.colored.following.bar,
body.colored {
  -webkit-animation-name: colors;
  -moz-animation-name: colors;
  -o-animation-name: colors;
  animation-name: colors;
  -webkit-animation-delay: 0s;
  -moz-animation-delay: 0s;
  -ms-animation-delay: 0s;
  -o-animation-delay: 0s;
  animation-delay: 0s;
  -webkit-animation-duration: 120s;
  -moz-animation-duration: 120s;
  -ms-animation-duration: 120s;
  -o-animation-duration: 120s;
  animation-duration: 120s;
  -webkit-animation-fill-mode: both;
  -moz-animation-fill-mode: both;
  -ms-animation-fill-mode: both;
  -o-animation-fill-mode: both;
  animation-fill-mode: both;
  animation-timing-function: linear;
  -webkit-animation-timing-function: linear;
  -webkit-animation-iteration-count: infinite;
  -moz-animation-iteration-count: infinite;
  -ms-animation-iteration-count: infinite;
  -o-animation-iteration-count: infinite;
  animation-iteration-count: infinite;
}

body:after {
  position: absolute;
  z-index: 1;
  width: 135%;
  height: 135%;
  top: 18%;
  left: 0px;
  content: '';
  background: url(https://semantic-ui.com/images/ui.png);
  -moz-transform-origin: 50% 50%;
  -o-transform-origin: 50% 50%;
  -ms-transform-origin: 50% 50%;
  transform-origin: 50% 50%;
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  -o-transform-style: preserve-3d;
  -ms-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-animation-name: splash;
  -moz-animation-name: splash;
  -o-animation-name: splash;
  animation-name: splash;
  -ms-transition: opacity 3s ease-in-out, transform 5s ease-in-out;
  -webkit-transition: opacity 3s ease-in-out, transform 5s ease-in-out;
  -moz-transition: opacity 3s ease-in-out, transform 5s ease-in-out;
  transition: opacity 3s ease-in-out, transform 5s ease-in-out;
  opacity: 0.06;
  -webkit-animation-duration: 15s;
  -moz-animation-duration: 15s;
  -ms-animation-duration: 15s;
  -o-animation-duration: 15s;
  animation-duration: 15s;
  -webkit-animation-fill-mode: both;
  -moz-animation-fill-mode: both;
  -ms-animation-fill-mode: both;
  -o-animation-fill-mode: both;
  animation-fill-mode: both;
  animation-timing-function: linear;
  -webkit-animation-timing-function: linear;
  -webkit-animation-iteration-count: infinite;
  -moz-animation-iteration-count: infinite;
  -ms-animation-iteration-count: infinite;
  -o-animation-iteration-count: infinite;
  animation-iteration-count: infinite;
  -webkit-transform: rotateX(50deg) rotateZ(0deg) rotateY(0deg) translateY(-14%) translateX(-14%) translateZ(370px);
  -moz-transform: rotateX(50deg) rotateZ(0deg) rotateY(0deg) translateY(-14%) translateX(-14%) translateZ(370px);
  transform: rotateX(50deg) rotateZ(0deg) rotateY(0deg) translateY(-14%) translateX(-14%) translateZ(370px);
}

.fixed.following.bar {
  background-image: none;
}

.fixed.following.bar {
  position: fixed;
  top: 0px;
  padding: 1em 0em;
  background-color: #FFFFFF;
}

.fixed.light.following.bar {
  background-color: #FFFFFF;
  border-bottom: 1px solid #DDDDDD;
  box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.04);
}

@keyframes splash {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% -475px;
  }
}

@-moz-keyframes splash {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% -475px;
  }
}

@-webkit-keyframes splash {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% -475px;
  }
}

@-ms-keyframes splash {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% -475px;
  }
}

@-o-keyframes splash {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% -475px;
  }
}

@keyframes colors {
  0% {
    background-color: #00B5AD;
  }
  12% {
    background-color: #3B83C0;
  }
  25% {
    background-color: #E07B53;
  }
  37% {
    background-color: #D9499A;
  }
  50% {
    background-color: #564F8A;
  }
  62% {
    background-color: #F2C61F;
  }
  75% {
    background-color: #D95C5C;
  }
  87% {
    background-color: #5BBD72;
  }
  100% {
    background-color: #F2C61F;
  }
}

@-moz-keyframes colors {
  0% {
    background-color: #00B5AD;
  }
  12% {
    background-color: #3B83C0;
  }
  25% {
    background-color: #E07B53;
  }
  37% {
    background-color: #D9499A;
  }
  50% {
    background-color: #564F8A;
  }
  62% {
    background-color: #F2C61F;
  }
  75% {
    background-color: #D95C5C;
  }
  87% {
    background-color: #5BBD72;
  }
  100% {
    background-color: #F2C61F;
  }
}

@-webkit-keyframes colors {
  0% {
    background-color: #00B5AD;
  }
  12% {
    background-color: #3B83C0;
  }
  25% {
    background-color: #E07B53;
  }
  37% {
    background-color: #D9499A;
  }
  50% {
    background-color: #564F8A;
  }
  62% {
    background-color: #F2C61F;
  }
  75% {
    background-color: #D95C5C;
  }
  87% {
    background-color: #5BBD72;
  }
  100% {
    background-color: #F2C61F;
  }
}

@-ms-keyframes colors {
  0% {
    background-color: #00B5AD;
  }
  12% {
    background-color: #3B83C0;
  }
  25% {
    background-color: #E07B53;
  }
  37% {
    background-color: #D9499A;
  }
  50% {
    background-color: #564F8A;
  }
  62% {
    background-color: #F2C61F;
  }
  75% {
    background-color: #D95C5C;
  }
  87% {
    background-color: #5BBD72;
  }
  100% {
    background-color: #F2C61F;
  }
}

@-o-keyframes colors {
  0% {
    background-color: #00B5AD;
  }
  12% {
    background-color: #3B83C0;
  }
  25% {
    background-color: #E07B53;
  }
  37% {
    background-color: #D9499A;
  }
  50% {
    background-color: #564F8A;
  }
  62% {
    background-color: #F2C61F;
  }
  75% {
    background-color: #D95C5C;
  }
  87% {
    background-color: #5BBD72;
  }
  100% {
    background-color: #F2C61F;
  }
}
              
            
!

JS

              
                // No js?  \o/
              
            
!
999px

Console