<div class="row">
<div class="col"></div>
<div class="col"></div>
<div class="col"></div>
</div>
.row {
margin-right: -15px;
margin-left: -15px;
}
.row:before,
.row:after {
display: table;
content: " ";
}
.row:after {
clear: both;
}
.col {
float: left;
width: 33.33333333%;
position: relative;
min-height: 1px;
padding-right: 15px;
padding-left: 15px;
}