Why does mobile firefox increase the font?

Question

css

Hello, tell me, is there a way to deal with this, Firefox increases the font on the mobile version of the site.
For example, on my site, it completely breaks the layout, https://dm-colorist.ru/ , if you access the site from any browser, everything is ok, even safari, but in firefox everything is crooked.
Even on https://www.divan.ru/ there is one page from all browsers, and a completely different main page will open in the mozilla!

Answer 1

Enable the full version of the site or check with the firefox developers why this is happening.

Answer 2

I don't know where you saw the difference...
Here are the screenshots from Browserstack, I took the first available device (Samsung Galaxy S21), opened the site in Chrome (left) and Firefox (right), took screenshots, specially aligned vertically to make it easier to compare.

The most noticeable thing is that the background is slightly different, what is the reason for this - I don’t know, but the fonts are exactly the same size.
Maybe you have Automatic font size turned off in Settings -> Accessibility and set to a value other than 100% ? Then yes, the size will be different, but you set it yourself in this case.