javascript - How to ensure that my js file is executed first?

Question

When I searched for the flexible library by hand, every time I refreshed it, the font size would become larger and then normal. Is there any way to ensure that the flexible library starts executing first? Ensure that the font size will not become larger when refreshed and then return to normal?

Answer 1

Put the js on the body and try it

Answer 2

You also use rem for fonts? Just write px as the font, and at most add a few breakpoints for different widths.