CSS tutorial > CSS element transparency > Element transparency

Element transparency

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Page title</title>
    <style>
      body { background-color: red; }
      .prim1 {
        width: 420px;
        margin: 30px 50px;
        background-color: #ffffff;
        border: 1px solid black;
        font-weight: bold;
        opacity: 0.5;
        filter: alpha(opacity=70); /*for IE8 and earlier versions*/
        text-align: center;
      }
      .prim2 {
        width: 420px;
        margin: 30px 50px;
        background-color: rgba(255,255,255,0.5);
        border: 1px solid black;
        font-weight: bold;
        text-align: center;
      }
    </style>
  </head>
 
  <body>
    <p class="prim1">The change in the degree of transparency for the div element allows
	the background of the parent element to be illuminated, through the child.</p>
      
     <p class="prim2">The change in the degree of transparency for the div element allows
	the background of the parent element to be illuminated, through the child.</p>
  </body>
</html>

Result:

Edit the code listed above and click the "GO" button to view the result.