css彩色加载进度条

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html

css

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html

css

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: center;
          justify-content: center;
  -webkit-box-align: center;
          align-items: center;
  background: #191919;
}

.progress {
  width: 100%;
  max-width: 260px;
  height: 6px;
  background: #e1e4e8;
  border-radius: 3px;
  overflow: hidden;
}
.progress .progress-bar {
  display: block;
  height: 100%;
  background: -webkit-gradient(linear, left top, right top, from(#ffd33d), color-stop(17%, #ea4aaa), color-stop(34%, #b34bff), color-stop(51%, #01feff), color-stop(68%, #ffd33d), color-stop(85%, #ea4aaa), to(#b34bff));
  background: linear-gradient(90deg, #ffd33d, #ea4aaa 17%, #b34bff 34%, #01feff 51%, #ffd33d 68%, #ea4aaa 85%, #b34bff);
  background-size: 300% 100%;
  -webkit-animation: progress-animation 2s linear infinite;
          animation: progress-animation 2s linear infinite;
}

@-webkit-keyframes progress-animation {
  0% {
    background-position: 100%;
  }
  100% {
    background-position: 0;
  }
}

@keyframes progress-animation {
  0% {
    background-position: 100%;
  }
  100% {
    background-position: 0;
  }
}

JavaScript

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