.nav li{
    line-height: 42px;
    display: inline-block;
    color: #ffffff;
    font-size: 16px;
    cursor: pointer;
    padding: 0px 23px;
    text-align: center;}
.nav li a{
     color:#fff;}
.nav li ul{display:none;}
.nav li:hover ul{display:block;}

.sub_nav{background:#fff;position: absolute; margin-left: -20px;}
.sub_nav li{text-align: center; line-height: 30px; display: block;}
.sub_nav li a{ color: #4d4d4d; font-size: 14px;}




.keywordfontcolor197276{ font-weight: bold; font-size: 10pt; color: #191d16; font-family: 宋体 ;}