make text inside button centered code example

Example 1: how to make a button centered in html5

<!--Put the button inside a p like this-->
<p style="text-align: center;"><button>See?</button>Whatever</p>

Example 2: button text not centered

padding: 0px solves the horizontal centering

whereas,

setting line-height equal to or less than the height of the button solves the vertical alignment.