body{background:url(https://tp.xuexuehaha.com/2.jpg)}
a{text-decoration: none;}
#Header1_HeaderTitle{font-size:40px;position:relative;top:46px;}
#navigator{background:rgba(0,0,0,0.5);}
#main{background:rgba(255,255,255,0.5);}
#mainContent{background:rgba(255,255,255,0.3);}