.m-ov-bf-h-50::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  z-index: 0;
  pointer-events: none;
}

.m-ov-bf-v-50::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: rgba(255, 255, 255, 0.1);
  z-index: 0;
  pointer-events: none;
}

.m-ov-bf-h-50-sk::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  z-index: 0;
  transform: skewX(20deg) scale(1.5);
  pointer-events: none;
}

.m-ov-bf-v-50-sk::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: rgba(255, 255, 255, 0.1);
  z-index: 0;
  transform: skewY(-5deg) scale(1.5);
}