styles.css

body {
  background-color: rgb(29,30,40); 
}

.item-up {
  background-color: rgb(189,215,238);
}

.item-down {
  background-color: rgb(248,203,173);
}

.sub-grid-wrapper {
  display: grid;
  grid-template-columns: repeat(2, 200px);
  grid-column-gap: 10px;
}

.grid-wrapper {
  display: grid;
  grid-template-rows: repeat(4, 100px);
  grid-template-columns: repeat(auto-fit, 410px);
  grid-row-gap: 10px;
  grid-column-gap: 10px;
  max-width: 830px;
  max-height: 210px;
  overflow-y: hidden;
  margin: 0 auto;
  justify-content: space-evenly;
  align-content: space-between;
}