Background: None transparent scroll repeat 0% 0% <br/> first, your sentence is wrong. <Br/> but the system will explain it as follows. <Br/> Background: transparent none repeat scroll 0% 0% <br/> background attributes: background Color: Specifies whether or not the background is repeated. When the background is repeated, the background is flattened. <br/> background: background-color | background-image | background-repeat | background-attachment | background-position <br/> transparent indicates transparency and no color <br/> none indicates no setting background Image <br/> repeat indicates duplicate images <br/> scroll indicates that the background image is scroll down with the browser <br/> 0% horizontal position in x0 <br/> 0% vertical position in y0 </P> <p> This is the default value of background, <br/> This is used when the background attribute is not set.