Have a following problem. When I created page, I didn't notice that customized all content to the scale of 25%. So when I return page to normal scale it looks like a mess. So I'm wondering, is there any way to make everything look the same as on 25% scale or should I manually change everything in CSS?
When tackling an issue, it's important to identify the source. In your case, it was user error - and the fix would be going back and adjusting your stylesheet for native scaling.
Resorting to a scale factor would just be duct taping it, but for the sake of completeness, the zoom
CSS property does what you wish, with a huge asterisk: It's non-standard, it's not supported in Firefox, and you shouldn't use it.