body {
  background-image: url("/img/bg-checkers.png");
  background-repeat: repeat;
  background-position: 50% 0;
}

#page {
  max-width: 960px;
  width: auto;
  margin: 0 auto;
  padding-top: 1em;
  background-color: #b4d5ed;
  
  display: flex;
  justify-content: center;
  align-items: center;
}