Example of three buttons with a blue background using the <button> element|CSS Snippets|W3Docs

Source Code: (back to article)

<!DOCTYPE html>
<html>
  <head>
    <title>Title of the document</title>
    <style>
      body {
        font-size: 60%;
        background: #00abb7;
      }
      .container {
        padding: 50px;
      }
      button,
      button::after {
        -webkit-transition: all 0.3s;
        -moz-transition: all 0.3s;
        -o-transition: all 0.3s;
        transition: all 0.3s;
      }
      button {
        background: none;
        border: 4px solid #fff;
        border-radius: 10px;
        color: #ffffff;
        display: block;
        font-size: 1.6em;
        font-weight: bold;
        margin: 10px auto;
        padding: 2em 6em;
        position: relative;
        text-transform: uppercase;
      }
      button::before,
      button::after {
        background: #fff;
        content: "";
        position: absolute;
        z-index: -1;
      }
      button:hover {
        color: #29f2e4;
      }
      .button1::after {
        height: 0;
        left: 0;
        top: 0;
        width: 100%;
      }
      .button1:hover:after {
        height: 100%;
      }
      .button2::after {
        height: 100%;
        left: 0;
        top: 0;
        width: 0;
      }
      .button2:hover:after {
        width: 100%;
      }
      .button3::after {
        height: 0;
        left: 50%;
        top: 50%;
        width: 0;
      }
      .button3:hover:after {
        height: 100%;
        left: 0;
        top: 0;
        width: 100%;
      }
    </style>
  </head>
  <body>
    <div class="container">
      <button type="button" class="button1">Button 1</button>
      <button type="button" class="button2">Button 2</button>
      <button type="button" class="button3">Button 3</button>
    </div>
  </body>
</html>