display none on mobile bootstrap code example

Example 1: bootstrap display inline block

<div class="d-inline-block"></div>

Example 2: bootstrap hide row

<div class="d-none"></div> for bootstrap 4

Example 3: is display-block a class

<span class="d-block p-2 bg-primary text-white">d-block</span>
<span class="d-block p-2 bg-dark text-white">d-block</span>