content center in bootstrap 4 code example

Example 1: bootstrap col center content

<div class="row">
    <div class="col-4 d-flex justify-content-center text-center">
        // for image and text
    </div>
</div>

Example 2: bootstrap justify-content-center for md

<div class="row justify-content-md-center"></div>

Example 3: alighn right boostrap 4

<div class="float-left">Float left on all viewport sizes</div><br>
<div class="float-right">Float right on all viewport sizes</div><br>
<div class="float-none">Don't float on all viewport sizes</div>

Example 4: bootstrap justify-content-center for lg

<div class="row justify-content-lg-center"><div>