:root {
  --block-bg-opacity: 0.5;
}

.wy-side-nav-search {
  background-color: #fff;
}

.getting-started {
  background-color: rgba(78, 150, 253, var(--block-bg-opacity));
}

.user-guides {
  background-color: rgba(0, 169, 154, var(--block-bg-opacity));
}

.developer-docs {
  background-color: rgba(171, 0, 182, var(--block-bg-opacity));
}

.key-ideas {
  border: 0px;
}