Hi i tryed like this:
<div class="button-bar bar-dark">
<a class="button button-calm button-outline button-clear">Popular</a>
<a class="button button-assertive button-outline button-clear">Newests</a>
</div>
but the result is really not good, the right button has left border while the left one has no border on the left side, how do you achive this (to put outlined buttons inline) correctly?