<html>
  <head>
    <style>
      p {
        color: white;
      }
      p.blue {
        background-color: blue;
      }
      p.red {
        background-color: red;
      }
    </style>
  </head>
  <body>
    <p class="blue">
      I am a paragraph. My background color is blue.
    </p>
    <p class="red">
      I am a paragraph. My background color is red.
    </p>
  </body>
</html>

