BODY{background:url(images/back.gif) repeat;}

H1{text-align:center; color:#3B7948; font-size:30px; font-weight:bold; font-family: "Times New Roman","Arial"}
H2 {text-align:center; color:#CC0000; font-size:20px; font-weight:bold; font-family: "Times New Roman","Arial"}

H3{text-align:left; color:#CC0000;font-style:italic; font-size:18px;font-weight:bold; font-family: "Times New Roman","Arial"} 
H4{text-align:center; color:#CC0000; font-size:16px; font-weight:bold; font-family: "Times New Roman","Arial"}
<h4>HTML Links and Anchors<a name="top"></a></h4>

P{text-align:justify; font-family: "Arial", "Times New Roman", serif; font-size:16px}

#intro{position:absolute; top: 12px; left: 40%;}
#content{position:absolute; top: 120px; left: 22%; overflow:visible;}

 
#navigation{position:absolute; top: 160px; left: 3%;}

a.navigation, a:visited.navigation{
background-image:url(images/button1.gif);
width:140px;
display:block;
border-style:solid;
border-width:1px;
border-color:#000 #000 #000 #000;
padding-top:5px;
padding-bottom:5px;
margin-top:4px;
margin-bottom:4px;
text-align:center;
text-decoration:none;
font-family:"tahoma", "arial";
color:#fff;
font-size:16px;
font-weight: bold;
}

a:hover.navigation{
background-image:url(images/button2.gif);
width:140px;
display:block;
border-style:solid;
border-width:1px;
border-color:#000 #000 #000 #000;
padding-top:5px;
padding-bottom:5px;
margin-top:4px;
margin-bottom:4px;
text-align:center;
text-decoration:none;
font-family:"tahoma", "arial";
color:#fff;
font-size:16px;
font-weight:bold;
}