About pseudo-class a:hover expressed in line style, solution, _html/css_WEB-ITnose

I want to customize a module in the Taobao backend template. I need to use a:hover to realize the style of the picture changing when the mouse rolls over. However, Taobao's SDK requires designers to change the CSS source file, so I just I want to be able to customize all the styles to be written in the row, such as

Write a navigation bar to change the background image when the mouse slides over it. Can any expert help me? How to write a:hover in the row style, or is there any other way to achieve it?
Urgent!

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