.ejdh{display:none;}
#yjdh:hover .ejdh{display:block;}
#yjdh{position: relative;    float: left;}
.ejdh{position: absolute;
    width: 160px;
    background-color: #005faf;
    left: -13%;
    top: 100%;
    z-index: 99999;
    text-align: center;}
    .ejdh li{    text-align: center;}
    .ejdh li a{text-align: center;
    width: 100%;
    padding: 0;}