<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title>A Cautionary Demo</title> <style rel="stylesheet" type="text/css" media="All">.danger { text-align: center; font-size: 1.2em; font-weight: bold; background-color: red; color: white; margin-left: 25%; margin-right: 25%; border: 3px solid red;} </style></head><body> <div class="danger ">this is a test. </div></body></html>