:root {
  --radius: 1rem
}

.card {
  border-radius: var(--radius)
}

.card-img-top img {
  border-top-left-radius: var(--radius);
  border-top-right-radius: var(--radius)
}

.object-fit-cover {
  object-fit: cover
}

.thumb-quad {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 2px;
  width: 100%;
  height: 100%
}

.thumb-quad img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block
}