Anchor tag not displayed as button using twitter bootstrap

Question

I'm using twitter bootstrap 3.0 and trying to display an anchor tag as a button using

<a href="#" class="btn">Add button</a>

But it is not showing as a button

When I use

<button class="btn"> Add button</button>

it is displayed as expected

Answer 1

   <a href="#" class="btn btn-default">Add button</a>

add btn-default