how to style a button border code example
Example 1: button style css
<div class="pure-button-group" role="group" aria-label="...">
<button class="pure-button">A Pure Button</button>
<button class="pure-button">A Pure Button</button>
<button class="pure-button pure-button-active">A Pure Button</button>
</div>
Example 2: button style css
<button class="pure-button pure-button-disabled">A Disabled Button</button>
<button class="pure-button" disabled="">A Disabled Button</button>