.grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  row-gap: 0.5rem;
  column-gap: 0.5rem;
}

.grid>div {
  position: relative;
  background-color: rgb(64, 64, 144);
  border: 0.125rem solid transparent;
  border-radius: 0.125rem;
}

.grid>div:focus,
.grid>div:hover {
  border: 0.125rem solid rgb(152, 200, 224);
}

.tooltip {
  visibility: hidden;
  position: absolute;
  z-index: 1;
  top: -0.5rem;
  left: 50%;
  transform: translate(-50%, -100%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16rem;
  padding: 0.25rem 0.5rem;
  font-weight: 700;
  color: var(--color-text-light);
  background-color: rgb(64, 64, 96);
  border-radius: 0.125rem;
}

.grid>div:focus .tooltip,
.grid>div:hover .tooltip {
  visibility: visible;
}

@media screen and (min-width: 640px) {
  .grid {
    grid-template-columns: repeat(10, 1fr);
  }
}