cascading style sheets

The styling system for HTML is called CSS, for Cascading Style Sheets. A stylesheet is a set of rules for how to style elements in a document. It can be given inside a\<style>tag.
```
<style>
  strong {
    font-style: italic;
    color: gray;
  }
</style>
<p>Now <strong>strong text</strong> is italic and gray.</p>
```