雨云（CSS 动画）

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html

css

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html

css

:root {
  --background-color: #0C3451
}

body{
  background: var(--background-color);
}

.box-canvas{
  position: relative;
  margin: auto;
  display: block;
  margin-top: 10vmin;
  margin-bottom: 10vmin;
  width: 80vmin;
  height: 80vmin;
  overflow: hidden;
}

.rain {
  position: absolute;
  width: 70vmin;
  height: 160vmin;
  transform: rotate(25deg);
  transform-origin: top left;
  left: 18vmin;
  display: flex;
  padding-left: 10vmin;
}

.stream {
  width: 1vmin;
  height: 160vmin;
  background: repeating-linear-gradient(
    #5F9ECC, 
    #5F9ECC 2vmin, 
    transparent 2vmin, 
    transparent 5vmin
  );
  margin-right: 3vmin;
  animation: rain 2s infinite linear;
}

@keyframes rain {
  0% {
    transform: translateY(-80vmin);
  }
  
  100% {
    transform: none;
  }
}

.cloud {
  --cloud-color: #7F7F7F;
  --highlight-color: #D3D3D3;
  
  position: absolute;
  width: 80vmin;
  height: 40vmin;
  background: var(--background-color);
}

.floof {
  position: absolute;
  background: var(--cloud-color);
  border-radius: 50%;
}

.floof:nth-child(1) {
  top: 2vmin;
  left: 20vmin;
  width: 40vmin;
  height: 20vmin;
  box-shadow: 0 -1.5vmin 0 var(--highlight-color);
}

.floof:nth-child(2) {
  left: 2vmin;
  width: 40vmin;
  height: 30vmin;
  bottom: 0;
  box-shadow: -1vmin -1vmin 0 var(--highlight-color);
}

.floof:nth-child(3) {
  width: 40vmin;
  height: 30vmin;
  bottom: 0;
  right: 2vmin;
  box-shadow: 1.5vmin -1vmin 0 var(--highlight-color);
}

.floof:nth-child(4) {
  top: 1vmin;
  right: 5vmin;
  width: 30vmin;
  height: 25vmin;
  box-shadow: 1vmin -1vmin 0 var(--highlight-color);
}

.floof:nth-child(5) {
  right: 20vmin;
  bottom: -2vmin;
  width: 35vmin;
  height: 25vmin;
  box-shadow: 1vmin -1vmin 0 var(--highlight-color);
}

.floof:nth-child(6) {
  left: 20vmin;
  top: 8vmin;
  width: 35vmin;
  height: 25vmin;
  box-shadow: -1vmin -1vmin 0 var(--highlight-color);
}

JavaScript

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