[HTML] 레이아웃

<div id="wrap" style="background-color: greenyellow;">#wrap전체블럭
	<div id="header" style="background-color: hotpink;">#header</div> <!-- id=header 끝 -->
	<div id="main" style="background-color: lightgray;">#main 
		<div id="sub" style="background-color: palegoldenrod;">#sub</div> <!-- id=sub 끝 -->
		<div id="content" style="background-color: thistle;">#content</div> <!-- id=content 끝 -->
	</div> <!-- id=main 끝 -->
	<div id="footer" style="background-color: tomato;">#footer</div>
</div> <!-- id=wraap 끝 -->