纯CSS图书加载动画

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html

css

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html

css

.book {
  --color: #fff;
  --duration: 6.8s;
  width: 32px;
  height: 12px;
  position: relative;
  margin: 32px 0 0 0;
  zoom: 1.5;
}
.book .inner {
  width: 32px;
  height: 12px;
  position: relative;
  transform-origin: 2px 2px;
  transform: rotateZ(-90deg);
  -webkit-animation: book var(--duration) ease infinite;
          animation: book var(--duration) ease infinite;
}
.book .inner .left,
.book .inner .right {
  width: 60px;
  height: 4px;
  top: 0;
  border-radius: 2px;
  background: var(--color);
  position: absolute;
}
.book .inner .left:before,
.book .inner .right:before {
  content: "";
  width: 48px;
  height: 4px;
  border-radius: 2px;
  background: inherit;
  position: absolute;
  top: -10px;
  left: 6px;
}
.book .inner .left {
  right: 28px;
  transform-origin: 58px 2px;
  transform: rotateZ(90deg);
  -webkit-animation: left var(--duration) ease infinite;
          animation: left var(--duration) ease infinite;
}
.book .inner .right {
  left: 28px;
  transform-origin: 2px 2px;
  transform: rotateZ(-90deg);
  -webkit-animation: right var(--duration) ease infinite;
          animation: right var(--duration) ease infinite;
}
.book .inner .middle {
  width: 32px;
  height: 12px;
  border: 4px solid var(--color);
  border-top: 0;
  border-radius: 0 0 9px 9px;
  transform: translateY(2px);
}
.book ul {
  margin: 0;
  padding: 0;
  list-style: none;
  position: absolute;
  left: 50%;
  top: 0;
}
.book ul li {
  height: 4px;
  border-radius: 2px;
  transform-origin: 100% 2px;
  width: 48px;
  right: 0;
  top: -10px;
  position: absolute;
  background: var(--color);
  transform: rotateZ(0deg) translateX(-18px);
  -webkit-animation-duration: var(--duration);
          animation-duration: var(--duration);
  -webkit-animation-timing-function: ease;
          animation-timing-function: ease;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
}
.book ul li:nth-child(0) {
  -webkit-animation-name: page-0;
          animation-name: page-0;
}
.book ul li:nth-child(1) {
  -webkit-animation-name: page-1;
          animation-name: page-1;
}
.book ul li:nth-child(2) {
  -webkit-animation-name: page-2;
          animation-name: page-2;
}
.book ul li:nth-child(3) {
  -webkit-animation-name: page-3;
          animation-name: page-3;
}
.book ul li:nth-child(4) {
  -webkit-animation-name: page-4;
          animation-name: page-4;
}
.book ul li:nth-child(5) {
  -webkit-animation-name: page-5;
          animation-name: page-5;
}
.book ul li:nth-child(6) {
  -webkit-animation-name: page-6;
          animation-name: page-6;
}
.book ul li:nth-child(7) {
  -webkit-animation-name: page-7;
          animation-name: page-7;
}
.book ul li:nth-child(8) {
  -webkit-animation-name: page-8;
          animation-name: page-8;
}
.book ul li:nth-child(9) {
  -webkit-animation-name: page-9;
          animation-name: page-9;
}
.book ul li:nth-child(10) {
  -webkit-animation-name: page-10;
          animation-name: page-10;
}
.book ul li:nth-child(11) {
  -webkit-animation-name: page-11;
          animation-name: page-11;
}
.book ul li:nth-child(12) {
  -webkit-animation-name: page-12;
          animation-name: page-12;
}
.book ul li:nth-child(13) {
  -webkit-animation-name: page-13;
          animation-name: page-13;
}
.book ul li:nth-child(14) {
  -webkit-animation-name: page-14;
          animation-name: page-14;
}
.book ul li:nth-child(15) {
  -webkit-animation-name: page-15;
          animation-name: page-15;
}
.book ul li:nth-child(16) {
  -webkit-animation-name: page-16;
          animation-name: page-16;
}
.book ul li:nth-child(17) {
  -webkit-animation-name: page-17;
          animation-name: page-17;
}
.book ul li:nth-child(18) {
  -webkit-animation-name: page-18;
          animation-name: page-18;
}

@-webkit-keyframes page-0 {
  4% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  13%, 54% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  63% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}

@keyframes page-0 {
  4% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  13%, 54% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  63% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-1 {
  5.86% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  14.74%, 55.86% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  64.74% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-1 {
  5.86% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  14.74%, 55.86% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  64.74% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-2 {
  7.72% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  16.48%, 57.72% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  66.48% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-2 {
  7.72% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  16.48%, 57.72% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  66.48% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-3 {
  9.58% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  18.22%, 59.58% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  68.22% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-3 {
  9.58% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  18.22%, 59.58% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  68.22% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-4 {
  11.44% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  19.96%, 61.44% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  69.96% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-4 {
  11.44% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  19.96%, 61.44% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  69.96% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-5 {
  13.3% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  21.7%, 63.3% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  71.7% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-5 {
  13.3% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  21.7%, 63.3% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  71.7% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-6 {
  15.16% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  23.44%, 65.16% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  73.44% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-6 {
  15.16% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  23.44%, 65.16% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  73.44% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-7 {
  17.02% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  25.18%, 67.02% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  75.18% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-7 {
  17.02% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  25.18%, 67.02% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  75.18% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-8 {
  18.88% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  26.92%, 68.88% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  76.92% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-8 {
  18.88% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  26.92%, 68.88% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  76.92% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-9 {
  20.74% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  28.66%, 70.74% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  78.66% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-9 {
  20.74% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  28.66%, 70.74% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  78.66% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-10 {
  22.6% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  30.4%, 72.6% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  80.4% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-10 {
  22.6% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  30.4%, 72.6% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  80.4% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-11 {
  24.46% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  32.14%, 74.46% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  82.14% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-11 {
  24.46% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  32.14%, 74.46% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  82.14% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-12 {
  26.32% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  33.88%, 76.32% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  83.88% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-12 {
  26.32% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  33.88%, 76.32% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  83.88% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-13 {
  28.18% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  35.62%, 78.18% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  85.62% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-13 {
  28.18% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  35.62%, 78.18% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  85.62% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-14 {
  30.04% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  37.36%, 80.04% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  87.36% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-14 {
  30.04% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  37.36%, 80.04% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  87.36% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-15 {
  31.9% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  39.1%, 81.9% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  89.1% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-15 {
  31.9% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  39.1%, 81.9% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  89.1% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-16 {
  33.76% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  40.84%, 83.76% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  90.84% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-16 {
  33.76% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  40.84%, 83.76% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  90.84% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-17 {
  35.62% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  42.58%, 85.62% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  92.58% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-17 {
  35.62% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  42.58%, 85.62% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  92.58% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes page-18 {
  37.48% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  44.32%, 87.48% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  94.32% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@keyframes page-18 {
  37.48% {
    transform: rotateZ(0deg) translateX(-18px);
  }
  44.32%, 87.48% {
    transform: rotateZ(180deg) translateX(-18px);
  }
  94.32% {
    transform: rotateZ(0deg) translateX(-18px);
  }
}
@-webkit-keyframes left {
  4% {
    transform: rotateZ(90deg);
  }
  10%, 40% {
    transform: rotateZ(0deg);
  }
  46%, 54% {
    transform: rotateZ(90deg);
  }
  60%, 90% {
    transform: rotateZ(0deg);
  }
  96% {
    transform: rotateZ(90deg);
  }
}
@keyframes left {
  4% {
    transform: rotateZ(90deg);
  }
  10%, 40% {
    transform: rotateZ(0deg);
  }
  46%, 54% {
    transform: rotateZ(90deg);
  }
  60%, 90% {
    transform: rotateZ(0deg);
  }
  96% {
    transform: rotateZ(90deg);
  }
}
@-webkit-keyframes right {
  4% {
    transform: rotateZ(-90deg);
  }
  10%, 40% {
    transform: rotateZ(0deg);
  }
  46%, 54% {
    transform: rotateZ(-90deg);
  }
  60%, 90% {
    transform: rotateZ(0deg);
  }
  96% {
    transform: rotateZ(-90deg);
  }
}
@keyframes right {
  4% {
    transform: rotateZ(-90deg);
  }
  10%, 40% {
    transform: rotateZ(0deg);
  }
  46%, 54% {
    transform: rotateZ(-90deg);
  }
  60%, 90% {
    transform: rotateZ(0deg);
  }
  96% {
    transform: rotateZ(-90deg);
  }
}
@-webkit-keyframes book {
  4% {
    transform: rotateZ(-90deg);
  }
  10%, 40% {
    transform: rotateZ(0deg);
    transform-origin: 2px 2px;
  }
  40.01%, 59.99% {
    transform-origin: 30px 2px;
  }
  46%, 54% {
    transform: rotateZ(90deg);
  }
  60%, 90% {
    transform: rotateZ(0deg);
    transform-origin: 2px 2px;
  }
  96% {
    transform: rotateZ(-90deg);
  }
}
@keyframes book {
  4% {
    transform: rotateZ(-90deg);
  }
  10%, 40% {
    transform: rotateZ(0deg);
    transform-origin: 2px 2px;
  }
  40.01%, 59.99% {
    transform-origin: 30px 2px;
  }
  46%, 54% {
    transform: rotateZ(90deg);
  }
  60%, 90% {
    transform: rotateZ(0deg);
    transform-origin: 2px 2px;
  }
  96% {
    transform: rotateZ(-90deg);
  }
}
html {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: inherit;
}
*:before, *:after {
  box-sizing: inherit;
}

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #275EFE;
}

JavaScript

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