Execute jQuery code after all CSS rules have been applied

$(document).ready() executes the code when all HTML elements have been loaded.

How to execute jQuery code after all of the CSS rules have been applied?

I have few stylesheets linked to the page and it takes some time to load the page. Element layout changes during the time of the loading.

For usability purposes I need to correct the element layout after all of them have target sizes. Otherwise I get wrong sizes of those elements.

Now I do it on focus or after some timeout, but need this after the page loads.