md-grid-list { margin: 8px; }
.gray { background: #f5f5f5; }
.green { background: #b9f6ca; }
.yellow { background: #ffff8d; }
.blue { background: #84ffff; }
.purple { background: #b388ff; }
.red { background: #ff8a80; }



md-grid-tile {
  transition: all 400ms ease-out 50ms;
}