.matovoye-steklo {
  width: 100%;
  height: 100%;
  box-shadow: 0 0 1rem 0 rgba(24, 94, 203, 0.2);
  border-radius: 3px;
  position: relative;
  z-index: 1;
  background: inherit;
  overflow: hidden;
}

.matovoye-steklo:before {
  content: "";
  position: absolute;
  background: inherit;
  z-index: -1;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  box-shadow: inset 0 0 2000px rgba(241, 241, 241, 0.5);
  filter: blur(10px);
  margin: -20px;
}