Here are some options for this tag. The BODY tag can have attributes that affect the entire body of the page. Since the body is the page as it is seen through the browser, this can have some really cool effects. So, if the background file is somewhere else you need to type in the exact location before the file name. When you just say the number like 50, you are telling HTML to make the HR 50 pixels wide.
Lets customize our page a little now.
I hope so. I didn't want to put a screen shot of the file up because I wanted you to see it for yourself first. Well, this is all I have to show you for now. I learn more about HTML with each page I write and you will too. Keep practicing, write pages about things that you like, and share with the world.