.banner{
    margin-top: 20px;
}
.banner img{
    width: 100%;
}
.introduction p{
    color: #fff;
    background-color: #1e77bd;
    padding: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-size: 18px;
    line-height: 26px;
}
.gkbk-title{
    text-align: center;
    font-size: 22px;
    font-weight: bold;
    margin: 10px 0;
}
.gkbk-list{
    border: 1px solid #ddd;
    box-shadow: 0 5px 4px #f6f6f6;
    margin: 30px 0;
}
.gkbk-list-title{
    height: 46px;
    line-height: 46px;
    padding: 0 10px;
    border-bottom: 1px solid #ddd;
    border-left: 2px solid #1e77bd;
}
.gkbk-list-title h3{
    display: inline-block;
    margin-top: 10px;
}
.gkbk-list-title span{
    float: right;
}
.gkbk-list-content{
    padding: 0 20px 30px 20px;
}
.gkbk-list:nth-child(2) .gkbk-list-content {
    overflow: hidden;
}
.gkbk-list-content {
    overflow: hidden;
}
.gkbk-list-content a{
    width: 140px;
    text-align: center;
    display: inline-block;
    padding: 5px 0;
    margin: 26px 15px 0 0;
    color: #1e77bd;
    text-decoration: none;
    border: 1px solid #1e77bd;
    border-radius: 5px;
}
.gkbk-list-content a:nth-child(7n){
    margin-right: 0;
}
.column{
    margin-bottom: 30px;
}