Safari 33% issue

by cmoreira

HTML

<div class="container">
<div class="column_3">1</div>
<div class="column_3">2</div>
<div class="column_3">3</div>
<div class="column_3">4</div>
<div class="column_3">5</div>
<div class="column_3">6</div>
<div class="column_3">7</div>
<div class="column_3">8</div>
<div class="column_3">9</div>
<div class="column_3">10</div>
</div>

CSS

.column_3 {
    width:33.3%;
    background-color:#ccc;
    color:#000;
    float:left;
   
}

.container {
   
    width:100%;
}