典型的なレスポンスレイアウトインスタンスコード

	
	
	
	


	
header
	

		
sidebarLeft
		
main
		
sidebarRight
	
	
footer

*{margin:0;padding:0;}
body{
	font:18px/20px "Microsoft YaHei",arial,serif;
	color:#fff;
	background:#fff;
}
img{border:0;}
a{text-decoration:none;}


.header,
.container,
.footer{
	margin-left:auto;
	margin-right:auto;
	margin-top:10px;
	text-align:center;
}

.header{
	height:100px;
	background:#333;
}

.sidebarLeft,
.main,
.sidebarRight{
	background:#333;
}

.footer{
	height:100px;
	background:#333;
}


@media screen and (min-width:960px){
	.header,
	.container,
	.footer{
		width:960px;
	}

	.sidebarLeft,
	.main,
	.sidebarRight{
		float:left;
		height:400px;
	}

	.sidebarLeft,
	.sidebarRight{
		width:200px;
	}

	.main{
		margin-left:10px;
		margin-right:10px;
		width:540px;
	}

	.container{
		height:400px;
	}
}

@media screen and (min-width:600px) and (max-width:960px){
	.header,
	.container,
	.footer{
		width:600px;
	}

	.sidebarLeft,
	.main{
		float:left;
		height:400px;
	}

	.sidebarRight{
		display:none;
	}

	.sidebarLeft{
		width:160px;
	}

	.main{
		margin-left:10px;
		width:430px;
	}

	.container{
		height:400px;
	}
}

@media screen and (max-width:600px){
	.header,
	.container,
	.footer{
		width:400px;
	}

	.sidebarLeft,
	.sidebarRight{
		width:400px;
		height:100px;
	}
	.main{
		margin-top:10px;
		width:400px;
		height:200px;
	}

	.sidebarRight{
		margin-top:10px;
	}

	.container{
		height:420px;
	}
}

/*
// 
.header,
.container,
.footer{
	margin-left:auto;
	margin-right:auto;
	width:960px;
	margin-top:10px;
	text-align:center;
}

.header{
	height:100px;
	background:#333;
}

.sidebarLeft,
.main,
.sidebarRight{
	background:#333;
	float:left;
	height:400px;
}

.sidebarLeft,
.sidebarRight{
	width:200px;
}

.main{
	margin-left:10px;
	margin-right:10px;
	width:540px;
}

.container{
	height:400px;
}

.footer{
	height:50px;
	background:#333;
}

*/