col-md-3 width code example
Example 1: col offset in bootstrap
.col-md-3 .offset-md-3
Example 2: bootstrap grids examples
<div class="container">
<div class="row">
<div class="col-md-8">.col-md-8</div>
<div class="col-md-4">.col-md-4</div>
</div>
</div>