*
{
margin:0px;
padding:0px;
}
#cabezera
{
width:100%;
height:40px;
background-color:#0000FF;
color:#FFFF00;
font-size:30px;
text-align:center;
}
#menuhorizontal
{
font-family:Arial;
width:100%;
list-style-type:none;
float:left
}
#menuhorizontal a:visited, #menuhorizontal a:link
{
float:left;
width:172px;
text-decoration:none;
background-color:#000000;
color:#999999;
border-style:outset;
padding:2px 5px;
}