bootstrap auto adjust two column width code example

Example 1: bootstrap col-md-5 center

<div class="container">
  <div class="row">
     <div class="col-sm-5 mx-auto">
        Centered
    </div>
  </div>
</div>

Example 2: bootstrap col size dinamically

<div class="row">
    <div class="col">
      1 of 2
    </div>
    <div class="col">
      2 of 2
    </div>
</div>