The WeChat applet wxss page is always centered, and debugging wxss does not work. Reasons and solutions

When writing a WeChat applet, I found that the page did not match the written wxss, and there was basically no change no matter how I changed it.
Reason: It is found that a container style is written in the global wxss, so all pages will be covered by the global container style.
Solution: Change the name of the container style of the page.