1. First find the homepage of someone else's store, right-click the blank space of the navigation bar, and view the source code.

2. The code you see after opening

If you don't find this logo, it means that it is decorated with the SDK advanced template, so there is no code.

Find these logos, here is the CSS file we are looking for. The following is the CSS file we are looking for. Follow us to open it with a browser, or download a notepad program, double-click to open it and you can see the corresponding code.

3. Open the file and click "Replace"

4. Then copy the following code #page#content.tshop-pbsm-shop-nav-ch and paste it into the Find content box. Don't fill in the box behind Replace with, just click the 'Replace All' button. Then, such CSS code can be used by us.

5. Finally, after we have completed the CSS code, we paste it into our own store, but find that the classification has no background color. The solution is not difficult, we just need to set the header background.