* {
  margin: 0;
  padding: 0;
}
body {
  --background: rgb(0, 0, 0);
  --foreground: rgb(255, 255, 255);
  background-color: var(--background);
  color: var(--foreground);
  user-select: none;
}
body > header {
  background-color: rgb(33, 34, 36);
  height: 56px;
  color: white;
  padding: 0 24px;
  box-shadow: 0 2px 7px 0 rgba(0, 0, 0, .25);
  display: flex;
  flex-direction: row;
  align-items: center;
}
a {
  color: rgb(240, 248, 255);
}
/* Game Board */
.board {
  border: 1px solid var(--foreground);
  font-family: monospace;
  margin: 10px auto;
  overflow-x: auto;
  width: 95%;
  font-size: 5em;
  text-align: center;
  text-transform: uppercase;
}
.word {
  display: inline-flex;
  margin: 5px 10px;
}
.tile {
  border: 3px solid var(--background);
  border-radius: 5px;
  display: inline-block;
  cursor: default;
}
.tile.selected {
  border-color: rgb(180, 24, 61);
  background-color: rgb(108, 14, 36);
  border-radius: 5px;
}
.tile:not(.special) .symbol {
  border-bottom: 1px solid var(--foreground);
  white-space: pre;
}
.tile .number {
  font-size: x-large;
}
/* Flex */
.flex-grow {
  flex-grow: 1;
}
.clickable {
  cursor: pointer;
}
@media screen and (max-width: 800px) {
  .board {
    font-size: 3em;
  }
}