Using the border property you can create a frame for your webpages.
There are a host of styles you can use, they are :
dotted, dashed, double, groove, inset, outset, ridge, solid
Look around this page.
<HEAD>
<style type="text/css">
<!--
body {
border : 15px;
border-style : ridge;
border-color : orange;
}
-->
</style>
</HEAD>