/* || General layout rules for narrow screens */

html {
	height: 100%;
	font-family: 'Microsoft Yahei', cursive;
	font-size: 10px;
	/* background-color: black; */
}

body {
	width: 100%;
	height: inherit;
	background-color: #999;
}

h1, h2, label {
  font-size: 3rem;
  text-align: center;
  color: black;
  text-shadow: -1px -1px 1px #aaa,
               0px 1px 1px rgba(255,255,255,0.5),
               1px 1px 2px rgba(255,255,255,0.7),
               0px 0px 2px rgba(255,255,255,0.4);
  margin: 0;
}

h1 {
  font-size: 3.5rem;
  padding-top: 1.2rem;
}

.wrapper {
	height: 100%;
	max-width: 800px;
	margin: 0 auto;
}

/* || main UI sections */

header {
  height: 60px;
}

canvas {
  border-top: 1px solid black;
  border-bottom: 1px solid black;
  margin-bottom: -3px;
  box-shadow: 0 -2px 4px rgba(0,0,0,0.7),
              0 3px 4px rgba(0,0,0,0.7);
}

#circle{
  margin-top: 30px;
}

.control {
  display: block;
  text-align: center;
  margin: 20px auto;
  font-size: 20px;
}