* {
  margin: 0;
  padding: 0;
}

body {
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

#container {
  top: 50%;
  left: 50%;
  position: fixed;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

.tile {
    color: #000000;
    display: block;
    padding: 32px;
    font-size: 24px;
    transition: 0.2s;
    font-weight: bold;
    text-align: center;
    margin: 16px 0;
    border: 2px solid #000000;
    background-color: #FFFFFF;
    text-decoration: none;
}

.tile:hover {
    color: #FFFFFF;
    background-color: #000000;
}