<div class="content">
<svg viewBox="0 0 960 300">
  <symbol id="s-text">
    <text text-anchor="middle" x="50%" y="50%">404</text>
  </symbol>

  <g class = "g-ants">
    <use xlink:href="#s-text" class="text"></use>
    <use xlink:href="#s-text" class="text"></use>
    <use xlink:href="#s-text" class="text"></use>
    <use xlink:href="#s-text" class="text"></use>
    <use xlink:href="#s-text" class="text"></use>
  </g>
</svg>
     
    <h1>Page Not Found</h1>
    <a href="#">Back to Home</a>
    </div>
html, body{
  margin: 0;
  padding: 0;
  font-weight: 800;
  box-sizing: border-box;
  background: #000;
  font-family: cursive;
}

svg {
    font: 10.5em 'Monoton';
    width: 100%;
    height: 100vh;
}

.content{
  text-align: center;
}

h1{
  text-align: center;
  font: 1.5em 'Roboto', sans-serif;
  font-weight: bold;
  color: #2f8f7f;
  opacity: .6;
}

a{
   display: inline-block;
   text-transform: uppercase;
   font-size: 1em 'Roboto';
   font-weight: 300;
   border: 1px solid #2f8f7f;
   border-radius: 4px;
   color: #2f8f7f;
   margin: 15px 0;
   padding: 8px 14px;
   text-decoration: none;
   opacity: .6;
}

.text {
    fill: none;
    stroke-dasharray: 8% 29%;
    stroke-width: 5px;
    stroke-dashoffset: 1%;
    animation: stroke-offset 5.5s infinite linear;
}

.text:nth-child(1){
  stroke: #1c234d;
  animation-delay: -1;
}

.text:nth-child(2){
  stroke: #315b2c;
  animation-delay: -2s;
}

.text:nth-child(3){
  stroke: #2f8f7f;
  animation-delay: -3s;
}

.text:nth-child(4){
  stroke: #2f8f7f;
  animation-delay: -4s;
}

.text:nth-child(5){
  stroke: #da2717;
  animation-delay: -5s;
}

@keyframes stroke-offset{
  100% {
    stroke-dashoffset: -35%;
  }
}

External CSS

  1. https://codepen.io/HighFlyer/pen/VwKxdJd.css?editors=0110

External JavaScript

  1. https://codepen.io/HighFlyer/pen/VwKxdJd.js?editors=0110