bootstrap css4 center text code example
Example 1: bootstrap column vertical align
<span class="align-baseline">baseline</span>
<span class="align-top">top</span>
<span class="align-middle">middle</span>
<span class="align-bottom">bottom</span>
<span class="align-text-top">text-top</span>
<span class="align-text-bottom">text-bottom</span>
Example 2: bootstrap text center in div
<!-- recommended method -->
<div class="col-xs-1 text-center">