.sd-board {
  border: 2px black solid;
}

.sd-back {
  transform: scale(1);
  background: radial-gradient(circle, rgba(255,233,0,1) 0%, rgba(255,255,255,1) 100%);
  transition: opacity 2s linear, transform 2s linear;
  opacity: 0;
}

.sd-back__won {
  opacity: 1;
  transform: scale(2);
}

.sd-cell {
  width: 50px;
  height: 50px;
  cursor: pointer;
  background-color: white;
  transition: background-color 100ms ease-in-out;
}

.sd-cell:hover {
  background-color: rgb(250, 250, 250);
}

.sd-cell__frozen {
  cursor: default;
  font-weight: 600;
  color:rgb(128, 128, 128)
}

.sd-cell__frozen:hover {
  background-color: white;
}

.sd-cell__preview {
  color:rgb(171, 171, 171)
}

.sd-num-wrapper {
  border: 2px black solid;
}

.sd-num {
  width: 35px;
  height: 35px;
  background-color: white;
  transition: background-color 100ms linear;
}

.sd-num-selected {
  background-color: rgb(220, 220, 220);
}

.timers {
  font-variant-numeric: tabular-nums;
}