SOURCE

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

html {
  background: #000;
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
}

head {
  display: block;
  position: relative;
  width: 200px;
  margin: 10% auto 0;
  -webkit-animation: shvr 0.2s infinite;
  animation: shvr 0.2s infinite;
}
head::after {
  content: '';
  width: 20px;
  height: 20px;
  background: #000;
  position: absolute;
  top: 30px;
  left: 25px;
  border-radius: 50%;
  box-shadow: 125px 0 0 #000;
  -webkit-animation: eye 2.5s infinite;
  animation: eye 2.5s infinite;
}

meta {
  position: relative;
  display: inline-block;
  background: #fff;
  width: 75px;
  height: 80px;
  border-radius: 50% 50% 50% 50%/45px 45px 45% 45%;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
}
meta::after {
  content: '';
  position: absolute;
  border-bottom: 2px solid #fff;
  width: 70px;
  height: 50px;
  left: 0px;
  bottom: -10px;
  border-radius: 50%;
}
meta::before {
  bottom: auto;
  top: -100px;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  left: 0;
}
meta + meta {
  float: right;
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
}
meta + meta::after {
  left: 5px;
}

body {
  margin-top: 100px;
  text-align: center;
  color: #fff;
}
body::before {
  content: '404';
  font-size: 80px;
  font-weight: 800;
  display: block;
  margin-bottom: 10px;
}
body::after {
  content: 'Got lost? How.....?  why.....?  Ahhhh....';
  color: #1EA7AB;
  width: 120px;
  font-size: 30px;
  overflow: hidden;
  display: inline-block;
  white-space: nowrap;
  -webkit-animation: text-show 2s infinite steps(3);
  animation: text-show 2s infinite steps(3);
}
@-webkit-keyframes eye {
  0% ,30% , 55%, 90% , 100% {
    -webkit-transform: translate(0, 0);
    transform: translate(0, 0);
  }
  10%, 25% {
    -webkit-transform: translate(0, 20px);
    transform: translate(0, 20px);
  }
  65% {
    -webkit-transform: translate(-20px, 0);
    transform: translate(-20px, 0);
  }
  80% {
    -webkit-transform: translate(20px, 0);
    transform: translate(20px, 0);
  }
}
@keyframes eye {
  0% ,30% , 55%, 90% , 100% {
    -webkit-transform: translate(0, 0);
    transform: translate(0, 0);
  }
  10%, 25% {
    -webkit-transform: translate(0, 20px);
    transform: translate(0, 20px);
  }
  65% {
    -webkit-transform: translate(-20px, 0);
    transform: translate(-20px, 0);
  }
  80% {
    -webkit-transform: translate(20px, 0);
    transform: translate(20px, 0);
  }
}
@-webkit-keyframes shvr {
  0% {
    -webkit-transform: translate(1px, 1em);
    transform: translate(1px, 1em);
  }
  50% {
    -webkit-transform: translate(0, 1em);
    transform: translate(0, 1em);
  }
  100% {
    -webkit-transform: translate(-1px, 1em);
    transform: translate(-1px, 1em);
  }
}
@keyframes shvr {
  0% {
    -webkit-transform: translate(1px, 1em);
    transform: translate(1px, 1em);
  }
  50% {
    -webkit-transform: translate(0, 1em);
    transform: translate(0, 1em);
  }
  100% {
    -webkit-transform: translate(-1px, 1em);
    transform: translate(-1px, 1em);
  }
}
@-webkit-keyframes text-show {
  to {
    text-indent: -373px;
  }
}
@keyframes text-show {
  to {
    text-indent: -373px;
  }
}
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