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<div style="border:solid 1px Black">
<div style="width:150px; float:left; border:solid 1px Red">1</div>
<div style="float:left;border:solid 2px Blue">2</div>
</div>
*{padding:0;margin:0;}
body{
text-align:center;
}
.main{
margin:0px auto;
}
.left{
width:200px;
float:left;
background:#f00;
}
.right{
margin-left:200px;
background:#0f0;
}
<div class="main">
<div class="left">sdfsdfg sadfasfdsdfsdfas waerawetfrawerfaw ersdfsdfs</div>
<div class="right">sdfsdfsdfffffffffffffffffffffffffffffffffffffffffffffff</div>
</div>