I'm a bit confused with one of the (supposedly) simplest of HTML elements: the <hr /> tag.
W3c says it works on all browsers, although the attributes of size, color and width have been removed with HTML5.
When I tried to use it in Firefox it seemed ok, and still accepted all three (with a little quirk with "size=") but on Internet Explorer it doesn't appear at all, unless I use some of the "deprecated" attributes. Anybody any clues on this?