particular or no
meaning different from their siblings. They are typically needed as “helpers.”</p>

<p>Using functional or generic names reduces the probability of unnecessary
document or template changes.</p>

<pre><code class="language-css bad">/* Not recommended: meaningless */
.yee-1901 {}

/* Not recommended: presentational */
.button-green {}
.clear {}
</code></pre>

<pre><code class="language-css good">/* Recommended: specific */
.gallery {}
.login {}
.video {}

/* Recommended: generic */
.aux {