淘宝导航条的下拉菜单背景色为什么是透明的，我用的码工css代码没问题，在其他店铺也没事，为什么这个店铺不行

淘宝导航条的下拉菜单背景色为什么是透明的，我用的码工css代码没问题，在其他店铺也没事，为什么这个店铺不行，这段代码是没问题的代码为：——.all-cats,.all-cats-hover,.all-cats .link .popup-icon,.all-cats-hover .link .popup-icon,.menu-list,.menu-list .link,.menu-list .link .popup-icon,.menu-list .menu,.menu-list .menu .link,.menu-list .menu-selected,.menu-list .menu-hover,.menu-list .menu-selected .link,.menu-list .menu-hover .link,.menu-list .menu-selected .link .popup-icon,.menu-list .menu-hover .link .popup-icon{background:none;}.skin-box-bd{background-repeat:repeat;}.all-cats{max-width:190px;}.menu-list{width:760px;}.skin-box-bd .all-cats-popup{width:188px;}.skin-box-bd .popup-content .cats-tree .fst-cat{list-style:none;float:left;width:188px;}.popup-content .cats-tree .snd-pop-inner{width:190px;}.popup-content .cats-tree .snd-pop-inner,.ks-contentbox,.popup-content,.popup-content .cats-tree,.menu-popup-cats{padding:0px;}.popup-content .cats-tree,.menu-popup-cats,.ks-contentbox,.all-cats .link{background:none;}.ks-contentbox{padding-top:0;}.all-cats .link .popup-icon,.all-cats-hover .link .popup-icon{top:3px;}.menu-list .link .title,.menu-list .menu-selected .link .title,.menu-list .menu{width:auto;}.all-cats-hover .link .popup-icon{transform:rotate(0deg);}.popup-content .cats-tree{margin:0px;}.skin-box-bd{border:none;background-color:#36AFFF;height:30px;}.menu-list .link{border:none;background:none;height:30px;line-height:30px;}.all-cats .link{border:none;background:none;background-image:none;height:30px;line-height:30px;background-color:#C40000;width:168px;}.popup-content{border:none;background-color:#FFFFFF;}.menu-list .menu{background:none;background-color:#36AFFF;height:30px;}.menu-list .menu .link{background:none;background-color:#36AFFF;}.menu-list .menu-hover{background:none;background-color:#FFFFFF;height:30px;}.menu-list .menu-hover .link{background:none;background-color:#FFFFFF;}.skin-box-bd .menu-list{background:none;height:30px;}.menu-list .menu-selected .link .title{background:none;color:#FFFFFF;background-color:#424242;}.all-cats .all-cats-trigger{background:none;background-color:#C40000;}.menu-list .menu-selected{background:none;background-color:#424242;}.menu-list .menu-selected .link{background:none;background-color:#424242;}.menu-list .menu-selected.menu-hover .link{background:none;background-color:#424242;}.menu-list .link .popup-icon{margin-top:8px;background-position:left 0px;background-repeat:no-repeat;width:14px;height:14px;display:block;background-image:url(//gdp.alicdn.com/imgextra/i3/2546029780/TB2eptoedqUQKJjSZFIXXcOkFXa_!!2546029780.png);}.all-cats .link .popup-icon{margin-top:8px;background-position:left 0px;background-repeat:no-repeat;width:14px;height:14px;display:block;background-image:url(//gdp.alicdn.com/imgextra/i3/2546029780/TB2eptoedqUQKJjSZFIXXcOkFXa_!!2546029780.png);}.menu-list .menu-hover .link .popup-icon{background-position:right 0px;display:block;background-image:url(//gdp.alicdn.com/imgextra/i3/2546029780/TB2eptoedqUQKJjSZFIXXcOkFXa_!!2546029780.png);}.all-cats{background:none;height:30px;float:left;display:inline;}.all-cats-hover .all-cats-trigger{background-image:none;background-color:#FFFFFF;}.all-cats-hover .link{background-image:none;background-color:#FFFFFF;}.all-cats-hover .link .popup-icon{background-position:right 0px;display:block;background-image:url(//gdp.alicdn.com/imgextra/i3/2546029780/TB2eptoedqUQKJjSZFIXXcOkFXa_!!2546029780.png);}.all-cats-hover{height:30px;line-height:30px;}.popup-content .cats-tree .fst-cat-hd:hover{background:none;}.popup-content .cats-tree .cat-hd-hover .fst-cat-name{background:none;color:#B00000;}.popup-content .cats-tree .cat-hd-hover .fst-cat-hd{background:none;}.popup-content .cats-tree .fst-cat{background:none;background-color:#FFFFFF;background-image:none;}.menu-popup-cats .sub-cat{background:none;background-color:#FFFFFF;line-height:30px;height:30px;border-bottom-width:1px;border-bottom-style:dotted;border-bottom-color:#ECECEC;background-image:none;}.cats-tree .fst-cat-hd .fst-cat-icon{margin-top:13.5px;}.popup-content .cats-tree .fst-cat-icon{background:none;}.popup-content .cats-tree .snd-pop-inner{background:none;background-color:#FFFFFF;height:260px;}.cats-tree .snd-cat-hd .snd-cat-icon{margin-top:13.5px;}.popup-content .cats-tree .snd-pop-inner .snd-cat .snd-cat-icon{background:none;}.menu-list .link .title{color:#FFFFFF;height:30px;line-height:30px;}.menu-list .menu-hover .link .title{color:#C40000;}.skin-box-bd .all-cats .title{height:30px;line-height:30px;}.menu-list .menu .title{font-size:14px;font-family:微软雅黑;font-weight:normal;font-style:normal;}.all-cats .link .title{color:#FFFFFF;}.all-cats-hover .link .title{color:#000000;}.all-cats .title{font-size:14px;font-family:微软雅黑;font-weight:normal;font-style:normal;}.menu-list .menu-selected.menu-hover .link .title{color:#FFFFFF;}.popup-content .cats-tree .fst-cat-name{color:#000000;line-height:30px;height:30px;}.menu-popup-cats .sub-cat a{color:#000000;}.menu-popup-cats .sub-cat-hover a{color:#B00000;}.popup-content .cats-tree .cat-hd-hover{background:none;background-color:#000000;}.menu-popup-cats .sub-cat-hover{background:none;background-color:#000000;}.skin-box-bd .popup-content .cats-tree .fst-cat{line-height:30px;height:30px;border-bottom-width:1px;border-bottom-style:dotted;border-bottom-color:#ECECEC;}.popup-content .cats-tree .fst-cat-hd{line-height:30px;height:30px;}.menu-popup-cats .sub-cat .cat-name{line-height:30px;height:30px;font-size:12px;font-family:微软雅黑;font-weight:bold;font-style:normal;}.cats-tree .fst-cat .cat-name{font-size:12px;font-family:微软雅黑;font-weight:bold;font-style:normal;}.popup-content .cats-tree .snd-cat-name{color:#000000;}.popup-content .cats-tree a.snd-cat-name:hover{color:#BA0000;}.popup-content .cats-tree .snd-pop-inner .snd-cat-hd-hover a{color:#BA0000;}.popup-content .cats-tree .snd-pop-inner .snd-cat{background-color:#FFFFFF;background-image:none;}.popup-content .cats-tree .snd-pop-inner .snd-cat-hd-hover{background-color:#000000;}.snd-pop-inner .fst-cat-bd .snd-cat{height:30px;line-height:30px;}.snd-pop-inner .fst-cat-bd .snd-cat-hd{height:30px;line-height:30px;}.snd-pop-inner .fst-cat-bd .snd-cat-name{height:30px;line-height:30px;}.cats-tree .snd-cat .snd-cat-name{font-size:12px;font-family:微软雅黑;font-weight:bold;font-style:normal;}