.about-nav{
    text-align: center;
    padding: 20px 0;
    border-bottom: 1px solid #f0f2f5;
}
.about-nav ul li{
    display: inline-block;
    vertical-align: top;
}
.about-nav ul li a{
    display: block;
    padding: 5px 10px;
    font-size: 16px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 5px;
    margin: 5px 0;
}
.about-nav ul li .active{
    display: block;
    padding: 5px 10px;
    font-size: 16px;
    background: #337ab7;
    border: 1px solid #eee;
    border-radius: 5px;
    color: #fff;
}
.about-nav ul li a:hover{
    display: block;
    padding: 5px 10px;
    font-size: 16px;
    background: #337ab7;
    border: 1px solid #eee;
    border-radius: 5px;
    color: #fff;
}
.about-con{
    width: 100%;
    min-height: 500px;
    margin: 0 auto;
    padding: 40px 0 0;
}
.img-box {
    width: 23%;
    margin: 10px 1% 20px;
    border-bottom: 1px solid #ccc;
    float: left;
    cursor: pointer;
    background: #edf2f7;
}
    .img-box:hover {
        border-bottom: 1px solid #3E9FCB;
        background: #c7e2f3;
    }
.img-bor{
    width: 100%;
    height: 100px;
    line-height:100px;
    padding:10px;
    padding-top:0;
    overflow: hidden;
}
.img-box img{
    width: 100%;
    height: auto;
    min-height: 100%;
}
.pbj{
    width: 100%;
    height: 100%;
    background: #ccc;
    position: relative;
}
.img-txt {
    line-height: 50px;
    
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    text-align: center;
   
}
    .img-txt h4 {
        color: #4c74ab;
        font-weight: 700;
    }
.img-mes {
    text-align: left;
    height: 100px;
    padding-left: 12px;
    padding-right: 12px;
    padding-top: 5px;
    line-height: 30px;
    font-size: 12px;
    overflow: hidden;
    color: #4c74ab;
}
.con h3 {
    color: rgb(75, 172, 198);
}
.con p{
    text-indent: 28px;
    line-height: 30px;
}
.con img{
    width: 40%;
    padding:20px 3%;
}
@media screen and (max-width: 600px){
    .img-bor{
        height: auto;
        max-height: 200px;
    }
    .img-box{
        width: 100%;
        margin-bottom: 20px;
    }
    .con img{
        width: 100%;
        padding:20px 0;
    }
}