3D弹跳动画

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html

css

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html

css

*, *::before, *::after {
  padding: 0;
  margin: 0 auto;
  box-sizing: border-box;
}

body {
  background-color: #111;
  color: #fff;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 800px;
  overflow: hidden;
}

.fall {
  position: relative;
  transform-style: preserve-3d;
  -webkit-animation: fallRotate 42s infinite linear;
          animation: fallRotate 42s infinite linear;
}
@-webkit-keyframes fallRotate {
  to {
    transform: rotateY(360deg);
  }
}
@keyframes fallRotate {
  to {
    transform: rotateY(360deg);
  }
}

.wall {
  position: absolute;
  width: 80px;
  height: 80px;
  transform-style: preserve-3d;
  background-image: linear-gradient(#0007, #000c);
  -webkit-animation: move 15s infinite linear;
          animation: move 15s infinite linear;
  bottom: -210px;
}
.wall:nth-child(odd) {
  left: -10px;
  transform: translate(-50%, 50%) rotateY(90deg) rotateX(45deg) translatez(-20px) translateY(-220px);
}
.wall:nth-child(even) {
  left: 10px;
  transform: translate(-50%, 50%) rotateY(-90deg) rotateX(45deg) translatez(-20px) translateY(-220px);
}
.wall:nth-child(1) {
  -webkit-animation-delay: -1.5s;
          animation-delay: -1.5s;
  background-color: #ef8f8f;
}
.wall:nth-child(2) {
  -webkit-animation-delay: -3s;
          animation-delay: -3s;
  background-color: #efc98f;
}
.wall:nth-child(3) {
  -webkit-animation-delay: -4.5s;
          animation-delay: -4.5s;
  background-color: #dcef8f;
}
.wall:nth-child(4) {
  -webkit-animation-delay: -6s;
          animation-delay: -6s;
  background-color: #a3ef8f;
}
.wall:nth-child(5) {
  -webkit-animation-delay: -7.5s;
          animation-delay: -7.5s;
  background-color: #8fefb6;
}
.wall:nth-child(6) {
  -webkit-animation-delay: -9s;
          animation-delay: -9s;
  background-color: #8fefef;
}
.wall:nth-child(7) {
  -webkit-animation-delay: -10.5s;
          animation-delay: -10.5s;
  background-color: #8fb6ef;
}
.wall:nth-child(8) {
  -webkit-animation-delay: -12s;
          animation-delay: -12s;
  background-color: #a38fef;
}
.wall:nth-child(9) {
  -webkit-animation-delay: -13.5s;
          animation-delay: -13.5s;
  background-color: #dc8fef;
}
.wall:nth-child(10) {
  -webkit-animation-delay: -15s;
          animation-delay: -15s;
  background-color: #ef8fc9;
}
@-webkit-keyframes move {
  from {
    bottom: -1210px;
  }
  to {
    bottom: 810px;
  }
}
@keyframes move {
  from {
    bottom: -1210px;
  }
  to {
    bottom: 810px;
  }
}
.wall > div {
  position: absolute;
  background-color: inherit;
}
.wall .ceil {
  width: 80px;
  height: 80px;
  background-image: linear-gradient(#fff7, #fff0);
  -webkit-animation: wallCeil 15s infinite linear;
          animation: wallCeil 15s infinite linear;
  -webkit-animation-delay: inherit;
          animation-delay: inherit;
  overflow: hidden;
}
.wall .ceil::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(#000, #0000 50%);
  -webkit-animation: shadow 15s infinite linear;
          animation: shadow 15s infinite linear;
  -webkit-animation-delay: inherit;
          animation-delay: inherit;
}
@-webkit-keyframes shadow {
  0%, 48%, 53%, 100% {
    opacity: 0;
    transform: translateY(80px) scale(2);
  }
  50% {
    opacity: 0.25;
    transform: translateY(4px) scale(0.5);
  }
}
@keyframes shadow {
  0%, 48%, 53%, 100% {
    opacity: 0;
    transform: translateY(80px) scale(2);
  }
  50% {
    opacity: 0.25;
    transform: translateY(4px) scale(0.5);
  }
}
.wall .top {
  width: 80px;
  transform: rotateX(90deg);
  transform-origin: top;
  background-image: linear-gradient(#0007, #fff7);
  -webkit-animation: wallHeight 15s infinite linear;
          animation: wallHeight 15s infinite linear;
  -webkit-animation-delay: inherit;
          animation-delay: inherit;
}
.wall .bottom {
  bottom: 0;
  width: 80px;
  transform: rotateX(-90deg);
  transform-origin: bottom;
  background-image: linear-gradient(#fff0, #000c);
  -webkit-animation: wallHeight 15s infinite linear;
          animation: wallHeight 15s infinite linear;
  -webkit-animation-delay: inherit;
          animation-delay: inherit;
}
.wall .left {
  bottom: 0;
  height: 80px;
  transform: rotateY(-90deg);
  transform-origin: left;
  background-image: linear-gradient(to bottom left, #fff3, #000c);
  -webkit-animation: wallWidth 15s infinite linear;
          animation: wallWidth 15s infinite linear;
  -webkit-animation-delay: inherit;
          animation-delay: inherit;
}
.wall .right {
  bottom: 0;
  right: 0;
  height: 80px;
  transform: rotateY(90deg);
  transform-origin: right;
  background-image: linear-gradient(to bottom right, #fff3, #000c);
  -webkit-animation: wallWidth 15s infinite linear;
          animation: wallWidth 15s infinite linear;
  -webkit-animation-delay: inherit;
          animation-delay: inherit;
}
@-webkit-keyframes wallCeil {
  0%, 49.75%, 55%, 100% {
    transform: translateZ(20px);
  }
  50% {
    transform: translateZ(10px);
  }
}
@keyframes wallCeil {
  0%, 49.75%, 55%, 100% {
    transform: translateZ(20px);
  }
  50% {
    transform: translateZ(10px);
  }
}
@-webkit-keyframes wallHeight {
  0%, 49.75%, 55%, 100% {
    height: 20px;
  }
  50% {
    height: 10px;
  }
}
@keyframes wallHeight {
  0%, 49.75%, 55%, 100% {
    height: 20px;
  }
  50% {
    height: 10px;
  }
}
@-webkit-keyframes wallWidth {
  0%, 49.75%, 55%, 100% {
    width: 20px;
  }
  50% {
    width: 10px;
  }
}
@keyframes wallWidth {
  0%, 49.75%, 55%, 100% {
    width: 20px;
  }
  50% {
    width: 10px;
  }
}

.ballArm {
  position: absolute;
  bottom: -210px;
  width: 20px;
  height: 240px;
  transform-origin: bottom;
  transform-style: preserve-3d;
  -webkit-animation: armRotate 1.5s infinite linear alternate;
          animation: armRotate 1.5s infinite linear alternate;
}
@-webkit-keyframes armRotate {
  from {
    transform: translateX(-50%) rotate(-45deg);
  }
  to {
    transform: translateX(-50%) rotate(45deg);
  }
}
@keyframes armRotate {
  from {
    transform: translateX(-50%) rotate(-45deg);
  }
  to {
    transform: translateX(-50%) rotate(45deg);
  }
}

.ball {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 10%;
  transform-style: preserve-3d;
  -webkit-animation: ballRotateZ 1.5s infinite linear alternate;
          animation: ballRotateZ 1.5s infinite linear alternate;
}
@-webkit-keyframes ballRotateZ {
  from {
    transform: rotate(45deg);
  }
  to {
    transform: rotate(-45deg);
  }
}
@keyframes ballRotateZ {
  from {
    transform: rotate(45deg);
  }
  to {
    transform: rotate(-45deg);
  }
}
.ball::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  background-image: radial-gradient(circle at top, #fff, #222);
  border-radius: 50%;
  -webkit-animation: ballRotateY 42s infinite linear;
          animation: ballRotateY 42s infinite linear;
}
@-webkit-keyframes ballRotateY {
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(-360deg);
  }
}
@keyframes ballRotateY {
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(-360deg);
  }
}

JavaScript

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