* {
	padding:0;
	margin:0;
}
.box {
	background:#ccc;
	height:50px;
	margin:0 auto;
}
.left {
	width:150px;
	float:left;
	margin-right:-150px;
	height:100%;
	background:#f00;
	position:relative;
	z-index:2;
	font-size:30px;
	line-height:50px;
	text-align:center;
	color:#fff;
}
.right {
	font-size:30px;
	line-height:50px;
	text-align:center;
	color:#fff;
	width:100%;
	float:left;
	height:100%;
	background:#ff9800;
	padding-left:180px;
	box-sizing:border-box;
}