.head_banner{
    /*background: url(book_banner.png) no-repeat center;*/
    /*background: url(museum_banner.jpg) no-repeat center;*/
    /*background: url(museum_banner.jpg) no-repeat center;*/
    background-size: 1000px;
    height: 135px;
}
a{
    text-decoration: none;
}
.where{
    /*padding-left: 70px;*/
    margin-top: 15px;
}
.leadership {
    margin-top: 20px;
    border-top: 3px solid #000;
}
.leadership_dn {
    text-align: center;
    width: 130px;
    list-style: none;
    margin: auto;
}
.leadership_dn li {
    padding: 8px 0;
    border-bottom: 1px dotted #c6c6c6;
    width: 120%;
    margin-top: 2%;
}
.leadership_dn li a {
    font-size: 15px;
    font-family: Microsoft YaHei,SimSun,Verdana,Helvetica,Arial,sans-serif;
    color: #9f9f9f;
    text-decoration: none;
}
.leadership_dn li a:active{
    color: black;
}
.leadership_dn li a:hover{
    color: #8498dd;
}
.museum_left{
    padding: 0;
}
.hotNews{
    padding-left: 20px;
    margin-top: 20px;
}
.title_example{
    margin-top: 20px;
    border-top: 3px solid #000;
    border-bottom: 1px solid #d8d8d8;
    padding-bottom: 10px;
    padding-top: 10px;
    font-size: 13px;
    margin-bottom: 12px;
}
.hotNews_list{
    padding: 0;
    margin-top: 15px;
}
.hotNews_list li{
    list-style: none;
    padding-bottom: 10px;
}
.hotNews_list a{
    color: black;
}
.title_example .title{
    font-size: 20px;
    font-family: Microsoft YaHei,SimSun,Verdana,Helvetica,Arial,sans-serif;
    color: black;
    text-decoration: none;
}
.title_info a{
    text-decoration: none;
    color: black;
    padding-left: 25px;
    font-size: 14px;
}
.contentList{
    padding: 0;
}
.contentList p{
    text-indent: 2em;
    color:#999999;
    font-size: 13px;
}
.contentList p a{
    float: right;
    text-decoration: none;
    color: black;
}
.contentList p a:hover{
    color: #8498dd;
}
.card_info_list{
    padding: 0;
}
.card_info_list li{
    list-style: none;
    border-bottom: 1px dotted #c6c6c6;
    padding: 8px 0;
    margin-top: 1%;
}
.card_info_list a{
    text-decoration: none;
    color: black;
}
.holder{
    text-align: center;
}
.holder a{
    padding: 5px;
    text-decoration: none;
}

@media (min-width: 1000px) {
    #main_body{
        width: 1000px;
    }
    .second_img img{
        margin-left: -5px;
    }
    .first_img img{
        width: 172px;
    }
    .second_img img{
        width: 182px;
    }
    .third_img img{
        width: 185px;
    }
}