上中下布局

1

2

3

4

Code

			
<div class="container">
	<h2>上中下布局</h2>
	<div class="row">
		<div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
			<div>
				<h1>1</h1>
			</div>
		</div>
	</div>
	<div class="row">
		<div class="col-lg-3 col-md-3 col-sm-3 col-xs-3">
			<div>
				<h1>2</h1>
			</div>
		</div>
		<div class="col-lg-9 col-md-9 col-sm-9 col-xs-9">
			<div>
				<h1>3</h1>
			</div>
		</div>
	</div>
	<div class="row">
		<div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
			<div>
				<h1>4</h1>
			</div>
		</div>
	</div>
</div>