make bootstrap button smaller code example
Example 1: large button in bootstrap
<button type="button" class="btn btn-primary btn-lg">Large button</button>
<button type="button" class="btn btn-primary">Large button</button>
<button type="button" class="btn btn-primary btn-sm">Large button</button>
<button type="button" class="btn btn-primary btn-lg btn-block">Block level button</button>
Example 2: bootstrap button full width
Create block level buttons—those that span the full width of a parent—by adding .btn-block.