CSS rules are applied without classes, why?

Question

I define CSS rules:

.info-specs h2, h3, h4, h5 {
    font-size: 1.5em;
    text-transform: none;
}

This should only work for h5 in elements with class "info-specs". However, upon inspection, I found that other h5 elements are also using this rule. Why? Here's an example:

<code>.info-specs h2, h3, h4, h5 {
    font-size:5em;
    text-transform: none;
}</code>

<code><h5>mytest </h5></code>

Answer 1

The browser's CSS interpreter will look for any h3, h4 and h5 elements, and only h2 it will look at Is it within .info-specs. Comma or grouped selectors treat everything separated by commas as separate selections.

Possible solutions to your problem are:

/* These select for any h2, h3, h4 and h5 within .info-specs */

.info-specs h2,
.info-specs h3,
.info-specs h4,
.info-specs h5
{
  text-decoration: underline;
}

/* These select for ant h2, h3, h4 and h5 that are direct chldren of .info-specs */
.info-specs > h2,
.info-specs > h3,
.info-specs > h4,
.info-specs > h5
{
  color: red;
}

<div class="info-specs">
  <p>In this example the headings within inf-specs will all be underlined but only the headings that are direct children of info-specs will be coloured red.</p>
  <h2>Heading 2</h2>
  <h3>Heading 3</h3>
  <div>
    <h3>Heading 3 in another div</h3>
  </div>
  <h4>Heading 4</h4>
  <h5>Heading 5</h5>
</div>