<style>
.clearfix:before,.clearfix:after {content: " ";display: table;}
.clearfix:after {clear: both;}
.clearfix {*zoom: 1;}
.left {float: left;width: 33%;}
</style>
<div class="clearfix">
<div class="left">TEST</div>
<div class="left">TEST</div>
<div class="left">TEST</div>
</div>