@shopify/polaris/.storybook/GridOverlay/GridOverlay.css

Shopify’s admin product component library

.GridOverlay {
  --pc-top-bar-height: 56px;
  --pc-nav-width: 240px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  display: grid;
  gap: var(--p-space-3);
  grid-template-columns: repeat(4, 1fr);
  padding: 0 var(--p-space-3);
  margin: 0 auto;
  background-color: var(--p-action-critical);
  opacity: 0.25;
  pointer-events: none;
}

@media screen and (min-width: 768px) {
  .GridOverlay {
    grid-template-columns: repeat(12, 1fr);
    padding: 0 var(--p-space-8);
  }
}

.Cell {
  height: 100%;
  background-color: var(--p-surface);
}

.inFrame {
  top: var(--pc-top-bar-height);
}

@media screen and (min-width: 768px) {
  .inFrame {
    left: var(--pc-nav-width);
  }
}