body {font-family:Arial, Verdana;}
h1 {font-family:Arial, Verdana; color:#c30000; font-size:150%; font-weight: normal; margin-top:1em; }
h2 {font-family:Arial, Verdana; color:black; font-size:110%; font-weight: bold; margin-top:1.8em;}
.codigo{font-family:Courier, Times New Roman;}
a:link {color:blue;}
a:visited {color:purple;}
a:active {color:red;}
a:hover {color:red; text-decoration:none;}