html, body {
  margin: 0;
  height: 100%;
  overscroll-behavior: none;
  overflow: hidden;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #FFFFFF;
}
#game-container {
  position: relative;
  display: inline-block;
}

.x-link {
  position: absolute;
  right: 760px;
  top: 249px;
  padding: 8px 14px;
  background: #DDDDDD;
  color: black;
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  z-index: 10; 
}

.x-link:hover {
  background: #888888;
}