Cascading Style Sheets have been around for a while now, and act as a complement to plain old HTML files. If you're new to HTML, then take a couple of minutes to learn a thing of two... you'll be surprised what you can do with style sheets!
As mentioned above, you can see that the actual code in mystyle.css is exactly the same as it was in the inline example. In our HTML file, we simply place a <link> tag in the <head> section of our page. The rel=”stylesheet” attribute tells the browser that the link to the external file is a style sheet. The type=”text/css” attribute tells the browser that mystyle.css is a text file containing css (cascading style sheet) declarations. Lastly, the href=”mystyle.css” attribute tells the browser that the actual file we want to load is mystyle.css.