Red line of text in CSS

Now let's figure out how to make a red line, that is, an indentation of the first line of text. The text-indent property is intended for this. Let's use it to make a red line for paragraphs:

html<p>
  some long text
</p>
<p>
  some long text
</p>
<p>
  some long text
</p>

cssp {
  text-indent: 50px;
  text-align: justify;
  width: 400px;
}

Результат: