@media screen and (max-width:900px){
  .loga{}
  .loga img {
    width: 320px;
    height: 50px;
    z-index:9999;
    position:fixed; top:0;}
}
/**组件样式**/
.dbg_n{
 background: url(../images/bg_d4.png);
    background-size: cover;}
.titlestyle1099017{ font-size: 9pt; color: #222222; line-height: 200%; text-decoration: none ;}