HTML and CSS use a box model, which means that page elements include margins, padding, background colors and, optionally, decorative borders. Open your HTML Web page in a text editor such as Notepad.

Digital images, for example, probably appear on some of your Web pages. If you ever need to prevent people from seeing those images, you can use CSS to hide the images by changing a single word in ...

HTML is the language most used to build web pages. It provides a lot of flexibility in building interactive and dynamic web pages. For example, you can use an image as a clicking button for a ...

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.