Question about CSS background image control

To set a variable background, you want to use CSS to control the background image.
If the color is changed
However, the tile setting is invalid when the background image is used.
The following code is directly stored on the webpage of the application.
However, when placed in CSS, only the actual size of the background image can be displayed, no matter whether it is set to tile or other settings have not changed

Thank you,

Code:
<Style type = "text/css">
<! --
Body {
Background-image: url (/directory 1/directory 2/bg.jpg );
Background-repeat: repeat-x;
}
-->
</Style>

You can also abbreviated the code as follows:

Code:
Body {background: url (/directory 1/directory 2/bg.jpg) repeat-x}
If you want to use positioning, such as 10PX from the left and 20PX from the top, you can also write as follows:

Code:
Body {background: url (/directory 1/directory 2/bg.jpg) repeat-x-10px-20px}