export md to pdf without theme

[zirawell]

I have put these three files(styles.css,main.ts,manifest.json) in the right place and it worked well
before. I could use this plugin to export pdf with markdown file in the style same as the preview mode. However, I have changed some fonts in the appearance-fonts, the css style has changed and then use this plugin to export pdf will lose the style of the preview mode with current theme. Then I changed the fonts to the previous and it didn't work. How to find where the problem is?