@charset "utf-8";

html, body {margin: 0; width: 100%; height: 100%; overflow: hidden; background-color: #000; } 

.tab {position: absolute; margin:15px; width:70px;}
.tab li {list-style-type:none; width:70px; height:30px;font-size:12px;letter-spacing:-0.05em; margin-bottom:5px;}
.tab li a {text-decoration:none;outline:none;background:rgba(0, 0, 0, 0.5);display:block;line-height:30px;text-align:center;color:#ffffff;border-radius:5px;}
.tab li a:hover {background:rgba(0, 138, 255, 0.5);text-decoration:none; color:#ffffff; cursor:default;font-weight:bold;}
.tab li a.selected {background:rgba(0, 138, 255, 0.5);text-decoration:none; color:#ffffff; cursor:default;font-weight:bold;}