.drop-down-content li a{display: block;
    width: 100%;
    height: 40px;
    overflow: hidden;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;}
@media only screen and (max-width: 1690px){
.drop-down-content{    padding-top: 14px;}
}
@media only screen and (max-width: 1100px){
.container{ top: 58px;}
}
@media only screen and (max-width: 680px){
.container{ top: 40px;}
}
@media only screen and (max-width: 640px){
.container{ top: 20px;}
}


.about_pic_div {
    float: left;
    width: 100%;
    margin-top: 30px;
    clear: both;}

.about_pic_div dt {
    border: 1px solid #ccc;
    width: 150px;
    height: 190px;
    float: left;
    margin-right: 20px;}
.about_pic_div dt img {
    width: 100%;
    height: 100%;}

.about_pic_div dd {
    float: left;
    color: #2b2b2b;
    position: relative;
    width: 60%;
    min-height: 200px;}

.about_pic_div dd h6 {
    font-weight: normal;
    font-size: 16px;
    line-height: 32px;
    font-weight: 700;color: #000;}

.about_pic_div dd p {
    font-size: 16px;
    line-height: 32px;
    width: 100%;}



@media only screen and (max-width: 500px){
.about_pic_div dt {
    border: 1px solid #ccc;
    width: 100%;
    height: auto;
    float: left;}
.about_pic_div dd {
    width: 100%;}
}