CSS Tricks2

Pure CSS Animated, snake border

by Soya Natsuki

HTML

<html>

  <head>
    <title>CSS Animation Effects</title>
    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css">
  </head>

  <body>
    <div class="continer-header">
      <h5>Hover mouse on the icons!</h5>
    </div>
    <ul>
      <li>
        <a href=" # ">
            <span></span>
            <span></span>
            <span></span>
            <span></span>
            <i class="fab fa-node " aria-hidden="true "></i>
          </a>
      </li>
      <li>
        <a href="# ">
            <span></span>
            <span></span>
            <span></span>
            <span></span>
            <i class="fab fa-vuejs " aria-hidden="true "></i>
          </a>
      </li>
      <li>
        <a href="# ">
            <span></span>
            <span></span>
            <span></span>
            <span></span>
            <i class="fab fa-html5 " aria-hidden="true "></i>
          </a>
      </li>
      <li>
        <a href="# ">
            <span></span>
            <span></span>
            <span></span>
            <span></span>
            <i class="fab fa-css3-alt " aria-hidden="true "></i>
          </a>
      </li>
    </ul>
  </body>

</html>

CSS

body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container-header {
  position: absolute;
  color: #333;
}

ul {
  position: absolute;
  top: 50%;
  left: 50% transform translate(-50%, -50%);
  margin: 0;
  padding: 0;
  display: flex;
}

ul li {
  list-style: none;
}

ul li a {
  display: block;
  position: relative;
  width: 100px;
  height: 100px;
  line-height: 100px;
  font-size: 50px;
  text-align: center;
  background: #fff;
  text-decoration: none;
  color: #262626;
  margin: 0 10px;
  transition: .5s;
}

ul li a span {
  position: absolute;
  transition: transform .5s;
}

ul li a span:nth-child(1),
ul li a span:nth-child(3) {
  width: 100%;
  height: 2px;
  background: #262626;
}

ul li a span:nth-child(1) {
  top: 0;
  left: 0;
  transform-origin: right;
}

ul li a:hover span:nth-child(1) {
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s;
}

ul li a span:nth-child(3) {
  bottom: 0;
  left: 0;
  transform-origin: left;
}

ul li a:hover span:nth-child(3) {
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .5s;
}

ul li a span:nth-child(2),
ul li a span:nth-child(4) {
  width: 2px;
  height: 100%;
  background: #262626;
}

ul li a span:nth-child(2) {
  top: 0;
  left: 0;
  transform: scaleY(0);
  transform-origin: bottom;
}

ul li a:hover span:nth-child(2) {
  transform: scaleY(1);
  transform-origin: top;
  transition: transform .5s;
}

ul li a span:nth-child(4) {
  top: 0;
  right: 0;
  transform: scaleY(0);
  transform-origin: top;
}

ul li a:hover span:nth-child(4) {
  transform: scaleY(1);
  transform-origin: bottom;
  transition: transform .5s;
}