body {
  width: 100%;
  height: 100%;
  margin: 0px;

  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 5fr 1fr;
}

.card-viewer {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;

  background-color: salmon;
  overflow: auto;
}

#card-viewer-lhs {
  border-right: 1px solid black;
}

#card-viewer-rhs {
  border-left: 1px solid black;
}


.card-list {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-evenly;
}

.card-list > img {
  flex: 0;

  width: 200px;
  height: auto;

  padding: 5px;
}

.deck-select {
  width: 100%;
  height: 100%;
  grid-column: span 2;

  display: grid;
  grid-template-rows: 1fr 1fr;
  grid-template-columns: 1fr 1fr;
}

.deck-select > .select-button {
  width: 100%;
  height: 100%;

  background-color: darksalmon;
  color: black;

  outline: 2px solid black;
  -webkit-user-select: none; /* Safari */
  -ms-user-select: none; /* IE 10 and IE 11 */
  user-select: none; /* Standard syntax */

  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.deck-select > .select-button.selected {
  background-color: gray;
}