The BODY tags enclose the actual web page. With this body tag you can however accomplish some other things. For example you can change the background of your web page. You have two options to do this. You can give your page a plain background color, or use an image which fills the entire background.
Most browsers use light gray as a standard background.
Or you must have altered the original settings. Black text on a white background is the best legible. The color is easiest fixed with the description between quotation marks. The quotes are obligatory, otherwise you might get an entirely different color from the one you intended. Below is an overview of the sixteen colors which are standardized for current browsers.