usage of hr tag

I may be mistaken on this one, but I believe the way the HR tag is used in page.tpl.php is incorrect and leads to problems if you actually want to use an HR tag within your content. According the W3C (http://www.w3schools.com/html5/tag_hr.asp), the hr tag should be used to define a change in content, not in the section of your document, as is now being done with this theme. If you want to apply a standard default style to HR's, you can't, because you end up messing up the basic page layout.