body {
	font-family: "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", Meiryo, "メイリオ", Verdana, Arial, Helvetica, "ＭＳ Ｐゴシック", sans-serif;
	font-size: small;
}
h1 {
	font-size: large;
}
h2 {
	font-size: medium;
}
canvas {
	border:1px solid #4c4c4c;
}