CodePen Embed - Запись CSS-стилей через точку "." и без пробелов

<h3>Запись CSS-стилей через точку "." и без пробелов</h3>

<div class="color">Первый DIV</div>
<div>Второй DIV</div>

<span class="color">Первый SPAN</span>

<ul>
  <li>1</li>
  <li>2</li>
  <li>3</li>
  <li>4</li>
  <li>5</li>
</ul>

div.color {
  background-color: red;
}

This Pen is owned by Nikolay Koval on CodePen.

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