/*组件样式*/
#yj{position: relative;}
.ej {
    position: absolute;
    width: 193%;
    background: #fff;
    z-index: 99999;
    display: none;
    left: 50%;
    transform: translate(-50%);}
.ej li{width:100%;height:40px;line-height:40px;padding:0 10px;background:rgba(0,0,0,.5);box-sizing: border-box;}
.ej li a{width:100%;color:#fff;font-size:16px;}
#yj:hover .ej{display:block;}