404创意动画闪动页面

<style>
.error {
  text-align: center;
  font-family: 'Gilda Display', serif;
  font-size: 95px;
  font-style: italic;
  text-align: center;
  width: 100px;
  height: 60px;
  line-height: 60px;
  margin: auto;
  position: absolute;
  top: 0;
  bottom: 0;
  left: -60px;
  right: 0;
  animation: noise 2s linear infinite;
  overflow: default;
}
@keyframes noise-1 {
  0%, 20%, 40%, 60%, 70%, 90% {opacity: 0;}
  10% {opacity: .1;}
  50% {opacity: .5; left: -6px;}
  80% {opacity: .3;}
  100% {opacity: .6; left: 2px;}
}
@keyframes noise-2 {
  0%, 20%, 40%, 60%, 70%, 90% {opacity: 0;}
  10% {opacity: .1;}
  50% {opacity: .5; left: 6px;}
  80% {opacity: .3;}
  100% {opacity: .6; left: -2px;}
}

@keyframes noise {
  0%, 3%, 5%, 42%, 44%, 100% {opacity: 1; transform: scaleY(1);}  
  4.3% {opacity: 1; transform: scaleY(1.7);}
  43% {opacity: 1; transform: scaleX(1.5);}
}

@keyframes noise-3 {
  0%,3%,5%,42%,44%,100% {opacity: 1; transform: scaleY(1);}
  4.3% {opacity: 1; transform: scaleY(4);}
  43% {opacity: 1; transform: scaleX(10) rotate(60deg);}
}
.error:after {
  content: '404';
  font-family: 'Gilda Display', serif;
  font-size: 100px;
  font-style: italic;
  text-align: center;
  width: 150px;
  height: 60px;
  line-height: 60px;
  margin: auto;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  opacity: 0;
  color: blue;
  animation: noise-1 .2s linear infinite;
}
.error:before {
    content: '404';
    font-family: 'Gilda Display', serif;
    font-size: 100px;
    font-style: italic;
    text-align: center;
    width: 100px;
    height: 60px;
    line-height: 60px;
    margin: auto;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    opacity: 0;
    color: red;
    animation: noise-2 .2s linear infinite;
}
.info {
  text-align: center;
  font-family: 'Gilda Display', serif;
  font-size: 15px;
  font-style: italic;
  text-align: center;
  width: 200px;
  height: 60px;
  line-height: 60px;
  margin: auto;
  position: absolute;
  top: 140px;
  bottom: 0;
  left: 0;
  right: 0;
  animation: noise-3 1s linear infinite;
}
.notfind{     position: relative; }
</style>
<div class="notfind"><br><div class="error">404</div><br><br><br><br><span class="info">File not found</span><br><br></div>