What to do if css does not display the background image

CSS not displaying background images is a common problem. The following are the possible causes of this problem and the corresponding solutions.

1. Path error
   The most common reason is that the path of the background image is incorrect. First, make sure the file path is consistent with the CSS file path. If the image and CSS file are in the same directory, you can use the image name directly. If they are not in the same directory, you need to use a relative or absolute path to reference the image.

For example, if the path to the background image is "../images/bg.jpg" but the path to the CSS file is "styles/main.css", then the correct path should be "../images/bg.jpg". ./images/bg.jpg”.

2. File name error
   Make sure the file name is also correct, including case and file format. On some operating systems, file names are case-sensitive, so the file name must exactly match the actual file name.

Also, make sure the file is in the correct format (e.g., .jpg, .png, .gif, etc.). If the wrong file format is used, the background image will not display.

3. Image not uploaded
   If the background image is not uploaded before uploading to the website, the image will not be displayed. Make sure the background image has been successfully uploaded and placed in the correct folder.
4. CSS code error
   If the CSS code is incorrect, the background image may not be displayed. Check your CSS code for syntax errors and ensure you are using CSS properties correctly.

For example, if you use the background attribute to set the background color and background image, if the code is wrong, the background image may not display properly.

You can use Chrome's inspection element or other debugging tools to check whether the CSS code is used correctly.

5. Browser cache
   If there are old CSS files in the browser cache, the background image may not display properly. You can try using Ctrl F5 to force refresh the page so that the browser reloads all files.
6. Naming Conflict
   If multiple CSS classes or IDs have the same name, it may cause the background image to not display properly. For example, if there are two classes with the same name but different CSS properties, this could cause a conflict.

You can try to rename one of the classes or IDs to avoid naming conflicts.

The above are some reasons and solutions that cause CSS not to display background images. These issues can be resolved by carefully checking the code and paths to ensure that the images are referenced and uploaded correctly.

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