.nav {
 float: left;
 display: block;
 width: 200px;
 height: 50px;
 text-align:center;
 list-style-type: none;
}
.nav span
{
 font: small-caps 900 14px arial;
 color: blue;
}
#demo-container {
    overflow: hidden;
 width:700px;
 height:400px;
}

#demo-wrapper {
   width:700px;
   position: relative;
   height: 400px;
   overflow: hidden;
}

.scrolling-content {
 height: 400px;
}