Placeholders

Sizing 
<span class="placeholder col-12 placeholder-xl mb-1"></span>
<span class="placeholder col-12 placeholder-lg"></span>
<span class="placeholder col-12"></span>
<span class="placeholder col-12 placeholder-sm"></span>
<span class="placeholder col-12 placeholder-xs"></span>
Animation 

<p class="placeholder-glow mb-0">
    <span class="placeholder col-12"></span>
</p>
<p class="placeholder-wave mb-0">
    <span class="placeholder col-12"></span>
</p>
Colors 
<span class="placeholder col-12"></span>
<span class="placeholder col-12 bg-primary"></span>
<span class="placeholder col-12 bg-primary1"></span>
<span class="placeholder col-12 bg-primary2"></span>
<span class="placeholder col-12 bg-primary3"></span>
<span class="placeholder col-12 bg-secondary"></span>
<span class="placeholder col-12 bg-success"></span>
<span class="placeholder col-12 bg-danger"></span>
<span class="placeholder col-12 bg-warning"></span>
<span class="placeholder col-12 bg-info"></span>
<span class="placeholder col-12 bg-light"></span>
<span class="placeholder col-12 bg-dark"></span>
Width 
<span class="placeholder bg-primary col-6"></span>
<span class="placeholder bg-primary w-75"></span>
<span class="placeholder bg-primary" style="width: 25%;"></span>
Card title

Some quick example text to build on the card title and make up the bulk of the card's content.

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