.row {
  display: flex;
  justify-content: space-around;
}

.hidden {
  display: none;
}
.container {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

.gameframe {
 flex: 1 1 auto;
 min-width: 0;
 height: 100%;
 border: none;
}