Crossbrowser version. How to implement it?

Question

css

In different browsers, my site shifts in different directions, it becomes not symmetrical, but if it does not move and everything is fine, then there is an extra background below and to the right, although it should not be. How to be?

Answer 1

We need to fix it over there and add a few properties on this side

Answer 2

It is necessary to use normalize.css or reset.css + check if the property works in a specific browser on caniuse.com