Калькулятор специфичности CSS
1Free CSS specificity calculator: paste a CSS selector to get its specificity score as (a,b,c) — IDs, classes/attributes/pseudo-classes, and elements — so you can tell which rule wins when styles conflict.
Specificity is (IDs, classes/attributes/pseudo-classes, elements/pseudo-elements). Higher wins; inline styles and !important override all of these.