body {
	background-color: #1F1F1F;
	font-size: 12px;
	line-height: 26px;
	margin: 0px;
	padding: 0px;
	color: #FFF;
	font-family: "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, Osaka, "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
}
 a.btn:hover {
   opacity: 0.5;
   filter alpha(opacity=50);
   -ms-filter: "alpha(opacity=50)";
 }