ode class="language-css bad">/* Not recommended: missing space */
.video{
  margin-top: 1em;
}

/* Not recommended: unnecessary line break */
.video
{
  margin-top: 1em;
}
</code></pre>

<pre><code class="language-css good">/* Recommended */
.video {
  margin-top: 1em;
}
</code></pre>

<h4 id="Selector_and_Declaration_Separation" class="numbered">Selector and Declaration Separation</h4>

<p>Separate selectors and declarations by new lines.</p>

<p>Always start a new line for each selector and declaration.</