html, body, #app {
  width: 100%;
  height: 100%;
  min-height: 100%;
  margin: 0;
  padding: 0;
  font-family: 'Lato', sans-serif;
  background-color: #eee; }

#app {
  position: relative;
  margin: 0 auto;
  padding-top: 40px;
  box-sizing: border-box; }

canvas#game {
  margin: 0 auto;
  position: relative;
  background-color: #fff;
  display: block;
  width: auto;
  height: auto;
  box-sizing: border-box; }

.tip {
  color: #888;
  text-align: center; }

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