th the first letter prefix</p>
<p>Exemple:</p>
<pre><code class="language-html">&lt;div _margin=&quot;l-5&quot;&gt;Margin left 5&lt;/div&gt;
&lt;div _margin=&quot;t-5&quot;&gt;Margin top 5&lt;/div&gt;
&lt;div _margin=&quot;r-5&quot;&gt;Margin right 5&lt;/div&gt;
&lt;div _margin=&quot;b-5&quot;&gt;Margin bottom 5&lt;/div&gt;</code></pre>
<div _bg="muted" _padding="2" _round _margin="l-5">Margin left 5</div>
<div _bg="muted" _padding="2" _round _margin="t-5">Margin top 5</div>
<div _bg="muted" _padding="2" _r