Xhtml+div layout: Three Div, both sides div width fixed, middle div width Adaptive

XHTML+DIV Regular Exam questions: Three Div, both sides div width fixed, the middle div width adaptive.

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1.html Code

1 <Divclass= "Dyleft">Left column fixed width is 200px</Div>2 <Divclass= "Dyright">Fixed width of 200px in right column</Div>3 <Divclass= "Dycenter">Middle self-adapting width</Div>

2.CSS Code

1 Body{2 font-size:12px;3 margin:0;4}5 . Dyleft{6 float: Left;7 width:200px;8}9 . Dyright{Ten float: Right; One width:200px; A} - . Dycenter{ - margin:0 210px; the} - Div{ - Border:dotted 1px Green -}