style.css

html {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 100%;
  background: #333;
}

#page-wrapper {
  width: 1395px;
  height: 500px;
  background: #FFFFFF;
  padding: 1em;
  margin: 1em auto;
  box-shadow: 0 2px 10px rgba(0,0,0,0.8);
}

h1 {
  margin-top: 0;
}

canvas {
  background-image: url("bg.png");
}

.controls {
  margin: 1em 0;
}

button {
  display: inline-block;
  border-radius: 3px;
  border: none;
  font-size: 0.9rem;
  padding: 0.4rem 0.8em;
  background: #EA3F16;
  border-bottom: 1px solid #EA1616;
  color: white;
  -webkit-font-smoothing: antialiased;
  font-weight: bold;
  margin: 0 0.25rem;
  text-align: center;
}

button:hover, button:focus {
  opacity: 0.75;
  cursor: pointer;
}

button:active {
  opacity: 1;
  box-shadow: 0 -3px 10px rgba(0, 0, 0, 0.1) inset;
}