Box con formato fijo

[chulifo]

Código CSS:

/* set millions of background images */
.rbroundbox { background: url(nt.gif) repeat; }
.rbtop div { background: url(tl.gif) no-repeat top left; }
.rbtop { background: url(tr.gif) no-repeat top right; }
.rbbot div { background: url(bl.gif) no-repeat bottom left; }
.rbbot { background: url(br.gif) no-repeat bottom right; }
 
/* height and width stuff, width not really nessisary. */
.rbtop div, .rbtop, .rbbot div, .rbbot {
width: 100%;
height: 7px;
font-size: 1px;
}
.rbcontent { margin: 0 7px;width: 250px; height: 100px;}
.rbroundbox { width: 50%; margin: 1em auto; }
 

Código HTML:

<div class="rbroundbox">
    <div class="rbtop"><div></div></div>
        <div class="rbcontent">
            <p>Lorem ipsum dolor sit amet, 
            consectetuer adipiscing elit. Duis 
            ornare ultricies libero. Donec 
            fringilla, eros at dapibus fermentum,
            tellus tellus auctor erat, vitae porta 
            magna libero sed libero. Mauris sed leo. 
            Aliquam aliquam. Maecenas vestibulum.</p>
        </div><!-- /rbcontent -->
    <div class="rbbot"><div></div></div>
</div>