Espero su ayuda, gracias!

Aqui les dejo el codigo del css
html {min-height: 100%;}
* {
margin: 0;
padding: 0;
}
a {color: #963;}
a:hover {color: #C60;}
img {
border: 0;
}
body {
background: #006699 url(img/bg.jpg) repeat-x left bottom;
color: #444;
font: normal 62.5% Tahoma,sans-serif;
}
p,code,ul {padding-bottom: 1.2em;}
li {list-style: none;}
h1 {
font: normal 1.8em Tahoma,sans-serif;
margin-bottom: 4px;
}
h1,h2,h3 {padding-top: 6px;}
/* misc */
.clearer {clear: both;}
.left { float: left; }
.right {float: right;}
/* structure */
.container {
background-color: #FFF;
font-size: 1.2em;
margin: 0 auto;
padding: 0 10px 10px;
width: 780px;
}
/* header */
.top {
padding: 10px 10px 0;
}
/* title */
.header {
background-color: white;
font-size: 1.2em;
height: 105px;
margin: 0 auto;
padding: 10px 10px 5px;
width: 780px;
}
.header .left, .header .right {
background-color: #257CA9;
color: #FFF;
height: 105px;
}
.header .left {
background-color: #006699;
font: normal 2.8em "Trebuchet MS",sans-serif;
line-height: 105px;
width: 564px;
text-align: left;
}
.header .right {
overflow: auto;
width: 212px;
}
.header .right p,.header .right h2 {padding: 0 16px;}
.header .right h2 {padding-top: 16px; font: normal 1.6em "Trebuchet MS",sans-serif;}
/* navigation */
.navigation {
background: #D9E1E5 url(img/nav.jpg);
border: 1px solid #D8EBD8;
height: 41px;
}
.navigation a {
background: transparent url(img/nav.jpg) left top repeat-x;
border-right: 1px solid #D8EBD8;
color: #FFFFFF;
display: block;
float: left;
font: bold 1.1em sans-serif;
line-height: 41px;
padding: 0 18px;
text-decoration: none;
}
.navigation a:hover {
background: transparent url(img/nav.jpg) left bottom;
color: #CCCCCC;
}
/* main */
.main {
border-top: 4px solid #FFF;
background: url(img/bgmain.gif) repeat-y;
}
/* sub navigation */
.sidenav {
float: right;
width: 210px;
}
.sidenav h2 {
color: #333300;
font-size: 1em;
line-height: 30px;
margin: 0;
padding-left: 12px;
}
.sidenav ul {
padding: 0;
border-top: 1px solid #D8EBD8;
}
.sidenav li {border-bottom: 1px solid #D8EBD8;}
.sidenav li a {
font-size: 1.1em;
color: #333300;
display: block;
padding: 8px 0 8px 5%;
text-decoration: none;
width: 95%;
}
.sidenav li a:hover {
background-color: #ebebeb;
color: #654;
}
/* content */
.content {
float: left;
margin: 10px 0;
padding: 0 16px;
width: 531px;
}
.content .descr {
color: #664;
font-size: 0.9em;
margin-bottom: 6px;
}
.content li {
list-style: url(img/li.gif);
margin-left: 18px;
}
.content .imgright {
padding: 5px;
border: 1px solid #D8EBD8;
margin-left: 4px;
float: right;
}
.content p {
color: #969696;
}
/* footer */
.footer {
background: url(img/bgfooter.gif) repeat-x;
color: #FFF;
font: bold 1em sans-serif;
line-height: 39px;
text-align: center;
}
.footer a,.footer a:hover {color: #FFF;}
div.tabMain {
background-color: #c0c0c0;
border: 1px solid #000000;
padding: 1em;}
Saludos