Как сосредоточиться на экране
after years of research we've concluded it's impossible
Worried Wasp
after years of research we've concluded it's impossible// Replace X and Y with a number and u with a unit. do calculations
// and remove parens
.centered_div {
width: Xu;
height: Yu;
position: absolute;
top: 50%;
left: 50%;
margin-left: -(X/2)u;
margin-top: -(Y/2)u;
}