Note: For the purposes of this lesson, you should save all the files you create in your text editor with .html as your file extension—for example, "my_first_web_page.html".

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 ...

The iframe attribute "src" holds the Web address for the HTML code you want to display in a particular section of your Web page. HTML's DOM, or Document Object Model, lets you replace an iframe's ...