#main,.Modal{position:absolute}body{background-image:url(../image/background.jpg);background-position:top}#header{padding:10px}#head{border-radius:50%}#main{left:10%;right:10%;padding:1%}#navigate{width:47%;height:100px;float:left}.navi,.naviimg{width:20%}.navi{margin-left:10px;display:inline}#mainPresentation{float:left;width:100%;margin-top:20px;background-color:#fff;border-radius:10px;border-right:3px solid #000;border-bottom:3px solid #000}.Modal{z-index:100;border:2px solid #add8e6;width:300px;height:150px;background-color:gray;border-radius:10px}.Title{background-color:#add8e6;margin:0;line-height:120%;position:relative;padding:2px}.BG,.Cover{left:0;top:0;width:100%;height:100%;position:absolute}.BG{z-index:-1;filter:alpha(opacity=70);background-color:gray;background-repeat:repeat;opacity:.7}.Cover{z-index:99}.Content{padding:2px;color:#fff;text-align:center}