Bootstrap 3 buttons - change border radius
<p>I've searched around but whatever I try, I can't make my buttons have a border radius of zero globally. This doesn't work, can anyone help? thanks!</p>

<pre><code>.btn btn-default{
    border-radius: 0px!important;
    -webkit-border-radius: 0px!important;
    -moz-border-radius: 0px!important;
}
</code></pre>