CSS交错波纹加载动画，HTML/Vue代码在线实时编辑、预览

<div class="loading"> <div class="dot"></div> <div class="dot"></div> <div class="dot"></div> <div class="dot"></div> <div class="dot"></div> </div>

            
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            body {
  display: flex;
  height: 100vh;
  justify-content: center;
  align-items: center;
  background: #323232;
}

.loading {
  $colors: #7ef9ff, #89cff0, #4682b4, #0f52ba, #000080;
  display: flex;

  .dot {
    position: relative;
    width: 2em;
    height: 2em;
    margin: 0.8em;
    border-radius: 50%;

    &::before {
      position: absolute;
      content: "";
      width: 100%;
      height: 100%;
      background: inherit;
      border-radius: inherit;
      animation: wave 2s ease-out infinite;
    }

    @for $i from 1 through 5 {
      &:nth-child(#{$i}) {
        background: nth($colors, $i);

        &::before {
          animation-delay: $i * 0.2s;
        }
      }
    }
  }
}

@keyframes wave {
  50%,
  75% {
    transform: scale(2.5);
  }

  80%,
  100% {
    opacity: 0;
  }
}