Do you have a link to the code for inspection?

Yep. Use it:

position: absolute;

width: 80px;

height: 80px;

right: 0px;

bottom: 0px;

background: rgba(21, 27, 30, 0.25);

filter: blur(80px);

backdrop-filter: blur(16px);

Figma promises that such an element will create a soft and smooth blur and darkening of the background that is under it. The browser creates a hard lens with sharp edges.

Sorry Vladimir I didn’t see this earlier, will take a look later if I get time.

Can you help me? I have been looking for a solution for several months

you can blur background in css by using following code pro zone

background: rgba(255,255,255,0.5);

backdrop-filter: blur(5px);