Scan through the CSS code and and locate the section governing the header. It begins with a hash symbol, and will look like this: Add some CSS code to position the header.

Use CSS code to style your site headers with borders and other design elements. HTML and CSS use a box model, which means that page elements include margins, padding, background colors and ...

CSS: Enter CSS to be applied to the HTML used in your tests. It is placed between <style> elements in the header portion of the page. HTML: This area allows you to enter HTML to be used in your tests.

Functional CSS vs. semantic CSS To get a sense of the difference, consider a header element. Let’s say we want to make it bold and red.

Learn how cascading style sheets (CSS) work, and how they can help you properly create HTML page layouts that conform to industry best practices.