CSS intermediate tutorial background image

Using xhtml + css for webpage layout has many attributes related to operations on background images. Most of the images on many performance factors are processed using the background. All attributes of CSS background can be processed.
Body {
Background: white url (images/bg.gif) no-repeat top right;
} 
This is a combination of the following attributes:
Background-color, as we have mentioned earlier.
Background-image: the storage location of the image.
Background-repeat: how to tile images. It can be repeat (the entire page will be tiled), repeat-y (tiled on the y axis, up or down) repeat-x (tiled on the x axis, left and right ), or no-repeat ).
Background-position, which can be top, center, bottom, left, right, or any combination above.
A background image can be used on a vast majority of HTML elements, not just the whole page (body ). It is easy to use but can achieve good results, such as corner shadows.
Note:
It is easy to lose control of the background image and render your webpage everywhere. Some people who are obviously over-active may think that building a colorful image on the background of a page looks cool, but it brings a challenge for users to recognize foreground text. This is an extreme example. In practice, the user interface-friendly readable text is black on the white plain background or white on the black plain background (of course, there is also a suggestion: the beige background or light gray background will be better, because it reduces glare ).
Therefore, the best way to use a background is to use a place without any content, or make the background image lighter, which can also reduce the size of the image file, because there is no more color involved (assuming you are using the index color format, such as GIF ).