.dummy {
  margin-top: 100%; }

.global-wrapper {
  min-width: 500px;
  max-width: 750px;
  padding: 10px; }

.board .gameover {
  -webkit-filter: blur(1px);
  -moz-filter: blur(1px);
  -o-filter: blur(1px);
  -ms-filter: blur(1px);
  filter: blur(1px); }

.title-bar {
  margin-bottom: 10px;
  box-shadow: 0 6px 14px -7px #001d9e;
  padding: 8px; }

.cell {
  overflow: hidden;
  position: absolute;
  top: 15px;
  bottom: 0;
  left: 15px;
  right: 0;
  text-align: center;
  padding-top: calc(50% - 30px);
  font-weight: bold;
  font-size: 150%;
  margin-top: -16px;
  margin-left: -14px; }

.clear {
  background-color: lightslategray;
  box-shadow: inset 0 0 20px 3px dimgray; }

.flag {
  background-color: yellow;
  box-shadow: inset 0 0 20px 3px goldenrod; }

.mine {
  background-color: red;
  box-shadow: inset 0 0 20px 3px crimson; }

.safe {
  background-color: green;
  box-shadow: inset 0 0 20px 3px darkgreen; }

.unknown {
  background-color: whitesmoke;
  box-shadow: inset 0 0 20px 3px silver; }

.board .row .col {
  border: solid 1px black; }