Elements Removed in HTML5
The following HTML4 elements have been removed from HTML5:
Element
Use instead
<acronym>
<abbr>
<applet>
<object>
<basefont>
CSS
<big>
CSS
<center>
CSS
<dir>
<ul>
<font>
CSS
<frame>
<frameset>
<noframes>
<strike>
CSS
<tt>
CSS
