Css加载动画

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html

css

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html

css

@import url("https://fonts.googleapis.com/css?family=Exo:300");
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: "Exo", sans-serif;
  font-size: 16px;
}

.wrap-loader {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  height: 100vh;
  background: #000;
}

.loader {
  position: relative;
  width: 20rem;
  height: 20rem;
}
.loader::before {
  z-index: 1;
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  width: 8.69565rem;
  height: 8.69565rem;
  background: #000;
  border-radius: 50%;
}
.loader .box {
  position: absolute;
  width: 10rem;
  height: 10rem;
  overflow: hidden;
}
.loader .box::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  opacity: 0.1;
}
.loader .box:nth-child(1) {
  top: 0;
  left: 0;
}
.loader .box:nth-child(1)::before {
  top: 50%;
  left: 50%;
  background: #4185F3;
  -webkit-animation: lightMe1 4s ease-out infinite normal;
          animation: lightMe1 4s ease-out infinite normal;
}
.loader .box:nth-child(2) {
  top: 0;
  right: 0;
}
.loader .box:nth-child(2)::before {
  top: 50%;
  right: 50%;
  background: #33A753;
  -webkit-animation: lightMe2 4s ease-out infinite normal;
          animation: lightMe2 4s ease-out infinite normal;
}
.loader .box:nth-child(3) {
  bottom: 0;
  right: 0;
}
.loader .box:nth-child(3)::before {
  bottom: 50%;
  right: 50%;
  background: #FABB04;
  -webkit-animation: lightMe3 4s ease-out infinite normal;
          animation: lightMe3 4s ease-out infinite normal;
}
.loader .box:nth-child(4) {
  bottom: 0;
  left: 0;
}
.loader .box:nth-child(4)::before {
  bottom: 50%;
  left: 50%;
  background: #E94234;
  -webkit-animation: lightMe4 4s linear infinite normal;
          animation: lightMe4 4s linear infinite normal;
}
.loader .wrap-text {
  z-index: 2;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  overflow: hidden;
}
.loader .text {
  position: relative;
  width: 40px;
  height: 40px;
  line-height: 40px;
  -webkit-animation: slider 8s ease-in infinite;
          animation: slider 8s ease-in infinite;
}
.loader .text span {
  display: block;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  font-size: 2em;
  color: #fff;
}

.loader-text {
  color: #fff;
  -webkit-transform: translateY(-2rem);
          transform: translateY(-2rem);
  letter-spacing: 6px;
  opacity: .2;
  -webkit-animation: blink 1s ease-out infinite alternate;
          animation: blink 1s ease-out infinite alternate;
}

@-webkit-keyframes lightMe1 {
  0% {
    opacity: 0.1;
  }
  25% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}

@keyframes lightMe1 {
  0% {
    opacity: 0.1;
  }
  25% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes lightMe2 {
  0% {
    opacity: 0.1;
  }
  25% {
    opacity: 0.1;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes lightMe2 {
  0% {
    opacity: 0.1;
  }
  25% {
    opacity: 0.1;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes lightMe3 {
  0% {
    opacity: 0.1;
  }
  50% {
    opacity: 0.1;
  }
  75% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes lightMe3 {
  0% {
    opacity: 0.1;
  }
  50% {
    opacity: 0.1;
  }
  75% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes lightMe4 {
  0% {
    opacity: 0.1;
  }
  75% {
    opacity: 0.1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes lightMe4 {
  0% {
    opacity: 0.1;
  }
  75% {
    opacity: 0.1;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes slider {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  10.5% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  12.5% {
    -webkit-transform: translateY(-40px);
            transform: translateY(-40px);
  }
  23% {
    -webkit-transform: translateY(-40px);
            transform: translateY(-40px);
  }
  25% {
    -webkit-transform: translateY(-80px);
            transform: translateY(-80px);
  }
  35% {
    -webkit-transform: translateY(-80px);
            transform: translateY(-80px);
  }
  37.5% {
    -webkit-transform: translateY(-120px);
            transform: translateY(-120px);
  }
  47.5% {
    -webkit-transform: translateY(-120px);
            transform: translateY(-120px);
  }
  50% {
    -webkit-transform: translateY(-160px);
            transform: translateY(-160px);
  }
  60% {
    -webkit-transform: translateY(-160px);
            transform: translateY(-160px);
  }
  62.5% {
    -webkit-transform: translateY(-200px);
            transform: translateY(-200px);
  }
  72.5% {
    -webkit-transform: translateY(-200px);
            transform: translateY(-200px);
  }
  75% {
    -webkit-transform: translateY(-240px);
            transform: translateY(-240px);
  }
  85% {
    -webkit-transform: translateY(-240px);
            transform: translateY(-240px);
  }
  87.5% {
    -webkit-transform: translateY(-280px);
            transform: translateY(-280px);
  }
  100% {
    -webkit-transform: translateY(-280px);
            transform: translateY(-280px);
  }
}
@keyframes slider {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  10.5% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  12.5% {
    -webkit-transform: translateY(-40px);
            transform: translateY(-40px);
  }
  23% {
    -webkit-transform: translateY(-40px);
            transform: translateY(-40px);
  }
  25% {
    -webkit-transform: translateY(-80px);
            transform: translateY(-80px);
  }
  35% {
    -webkit-transform: translateY(-80px);
            transform: translateY(-80px);
  }
  37.5% {
    -webkit-transform: translateY(-120px);
            transform: translateY(-120px);
  }
  47.5% {
    -webkit-transform: translateY(-120px);
            transform: translateY(-120px);
  }
  50% {
    -webkit-transform: translateY(-160px);
            transform: translateY(-160px);
  }
  60% {
    -webkit-transform: translateY(-160px);
            transform: translateY(-160px);
  }
  62.5% {
    -webkit-transform: translateY(-200px);
            transform: translateY(-200px);
  }
  72.5% {
    -webkit-transform: translateY(-200px);
            transform: translateY(-200px);
  }
  75% {
    -webkit-transform: translateY(-240px);
            transform: translateY(-240px);
  }
  85% {
    -webkit-transform: translateY(-240px);
            transform: translateY(-240px);
  }
  87.5% {
    -webkit-transform: translateY(-280px);
            transform: translateY(-280px);
  }
  100% {
    -webkit-transform: translateY(-280px);
            transform: translateY(-280px);
  }
}
@-webkit-keyframes blink {
  from {
    opacity: .2;
  }
  to {
    opacity: .75;
  }
}
@keyframes blink {
  from {
    opacity: .2;
  }
  to {
    opacity: .75;
  }
}

JavaScript

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