* { margin: 0; padding: 0; }
p { margin-bottom: 1.5em; }
button { padding: 4px 8px; }

#canvas { margin: 20px; }
#fbOverlay { display: none; }

.yui-widget #fbOverlay
   {
   display: block;
   background: rgba(0, 0, 0, 0.5);
           border-radius: 6px;
      -moz-border-radius: 6px;
   -webkit-border-radius: 6px;
   padding: 10px;
   }

#fbOverlay .yui-widget-hd
   {
   border: #3B5998 1px solid;
   background: #6D84B4;
   color: #fff;
   padding: 0 10px;
   cursor: move;
   }

#fbOverlay .yui-widget-bd
   {
   background: #fff;
   border: #555 1px solid;
   border-top: none;
   border-bottom : none;
   padding: 0 10px;
   }

#fbOverlay .yui-widget-ft
   {
   border: #555 1px solid;
   border-top: none;
   background: #f2f2f2;
   }

#fbOverlay .yui-widget-ft > div
   {
   border-top: #ccc 1px solid;
   padding: 5px 10px;
   text-align: right;
   }