<div style="width:30%;padding:0 10px 0 0;float:left;">
Your content for your column #1
Your content for your column #1
Your content for your column #1</div>
<div style="width:30%;padding:0 10px 0 0;float:left;">
Your content for your column #2
Your content for your column #2
Your content for your column #2
</div>
<div style="width:30%;padding:0 10px 0 0;float:right;">
Your content for your column #3
Your content for your column #3
Your content for your column #3
</div>
<div style=”clear:both;”></div>