CSS Specificity - snappify.com

<html>
  <head>
    <style>
      .box {
        width: 100px;
        height: 100px;
        margin: 20px;
        background-color: blue;
      }
      body div {
        background-color: red;
      }
      body div:first-of-type.box {
        background-color: yellow;
      }
      #box-2 {
        background-color: orange;
      }
    </style>
  </head>
  <body>
    <div class="box">Box 1</div>
    <div class="box" id="box-2">Box 2</div>
    <div class="box" style="background-color: grey">Box 3</div>
  </body>
</html>