.x_nav{
    background: #ffffff;
    transition: all .3s;}

.nav.c_nav > li {
    position: relative;}
.nav > li:hover .x_nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;}
.nav .x_nav {
    position: absolute;
    left: 0;
    top: 40px;
    width: 200px;
    transform: translateY(30px);
    transition: all .3s;
    opacity: 0;
    visibility: hidden;}
.nav .x_navbox {
    padding: 0;
    width: 100%;}
.x_navbox {
    max-width: 90%;
    margin: 0 10px;
    padding-top: 40px;
    padding-bottom: 40px;}
.nav_list{
    width: 100%;}
.nav_list li{
    width: 100%;}
.keywordfontcolor260265{ font-weight: bold; font-size: 10pt; color: #191d16; font-family: 宋体 ;}