eksempel på en mulig fejl:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "
http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="content-type" content="text/html; charset=iso-8859-1"><title>Ingen titel</title>
</head><body>
<div style="position:relative;height:0px;"><div style="position:absolute;">
<span style="width:100%;background:red;">span (inline width 100%)</span>
<br><br>
<span style="width:100%;background:red;display:block;">span (block width 100% - brug div istedet)</span>
<br><br>
<div style="background:red;">div (block)</div>
<br><br>
<div style="background:red;width:100%;">div width:100%; (block)</div>
</div></div>
</body></html>
vs.:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "
http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="content-type" content="text/html; charset=iso-8859-1"><title>Ingen titel</title>
</head><body>
<div style="position:relative;height:0px;"><div style="position:absolute;width:100%;">
<span style="width:100%;background:red;">span (inline width 100%)</span>
<br><br>
<span style="width:100%;background:red;display:block;">span (block width 100% - brug div istedet)</span>
<br><br>
<div style="background:red;">div (block)</div>
<br><br>
<div style="background:red;width:100%;">div width:100%; (block)</div>
</div></div>
</body></html>