How to Center Content in a Bootstrap Column?

Centering Content in a Bootstrap Column

You're experiencing difficulties centering the content within a Bootstrap column. Your provided HTML includes the following:

<code class="html"><div class="row">
   <div class="col-xs-1 center-block">
       <span>aaaaaaaaaaaaaaaaaaaaaaaaaaa</span>
   </div>
</div></code>

Solution:

The issue lies in the use of the "center-block" class. This class is no longer supported in current versions of Bootstrap. Instead, you should use one of the following methods:

Before Bootstrap 3:

Use the "align" attribute:

<code class="html"><div class="col-xs-1" align="center"></code>

Bootstrap 3 and 4:

Use the "text-center" class:

<code class="html"><div class="col-xs-1 text-center"></code>

Bootstrap 4:

Use flex classes:

<code class="html"><div class="d-flex justify-content-center">
   <div>some content</div>
</div></code>

Note: Bootstrap 4 aligns content horizontally by default. For vertical alignment, use "flex-direction: column" on the parent element.

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