HTML _CSS

3D Animated Stairs

HiroDaegu 2022. 8. 23. 00:47
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<!DOCTYPE html>
<html lang="ko">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>3D ANIMATED STAIRS</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <div class="stairs">
    <div class="base"></div>
    <div class="step" style="--j:1;">
      <i></i>
      <i></i>
    </div>
    <div class="step" style="--j:2;">
      <i></i>
      <i></i>
    </div>
    <div class="step" style="--j:3;">
      <i></i>
      <i></i>
    </div>
    <div class="step" style="--j:4;">
      <i></i>
      <i></i>
    </div>
    <div class="step" style="--j:5;">
      <i></i>
      <i></i>
    </div>
    <div class="step" style="--j:6;">
      <i></i>
      <i></i>
    </div>
  </div>
</body>
</html>
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: radial-gradient(#EAC4FF, #9E57C5);
  overflow: hidden;
}

.stairs {
  position: relative;
  width: 500px;
  height: 300px;
  transform-style: preserve-3d;
  transform: rotateX(-30deg) rotateY(250deg) ;
  animation: animate 10s linear infinite;
}

@keyframes animate {
  0% {
    transform: rotateX(-30deg) rotateY(0);
  }
  100% {
    transform: rotateX(-30deg) rotateY(360deg);
  }
}

.stairs .base {
  position: absolute;
  top: 0;
  left: 60px;
  width: 360px;
  height: 300px;
  background-color: #A54BCF;
  transform: rotateX(90deg) translateZ(-150px) scale(1.25);
  filter: blur(20px);
  opacity: .5;
}

.stairs .step {
  position: absolute;
  left: calc(60px * var(--j));
  bottom: 0;
  width: 60px;
  height: calc(60px * var(--j));
  transform-style: preserve-3d;
}

.stairs .step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 300px;
  background-color: #CF8DF1;
  transform: rotateX(90deg) translateZ(150px);
}

.stairs .step:hover::before {
  filter: brightness(1.1);
  cursor: pointer;
}

.stairs .step::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 300px;
  height: 60px;
  background-color: #AE52DD;
  transform: rotateY(90deg) translateZ(-150px);
}

.stairs .step i {
  position: absolute;
  display: block;
  width: 60px;
  height: 100%;
  background-color: #A54BCF;
  transform-style: preserve-3d;
}

.stairs .step i:nth-child(1) {
  transform: translateZ(150px);
}

.stairs .step i:nth-child(2) {
  transform: translateZ(-150px);
}

.stairs .step:last-child i:nth-child(2)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 300px;
  height: 100%;
  background: #AE52DD;
  transform: rotateY(90deg) translate3d(-150px, 0, -90px);
}
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