.about-nav{
    height: 46px;
    border-bottom: 4px solid #0268b4;
    line-height: 46px;
}
.about-nav li{
    width: 140px;
    float: left;
    text-align: center;
    font-size: 22px;
    color: #333;
    cursor: pointer;
}
 .about-active{
    background-color:#0268b4;
     border-radius: 4px 4px 0 0;
     color: #fff!important;
}

.about-banner{
    background: url("../img/about-us.png") no-repeat;
    width: 100%;
    height: 201px;
    margin-top: 76px;
}
.about-text{
    text-indent: 2%;
    font-size: 18px;
    color: #3a3a3a;
    line-height: 30px;
    margin-top: 78px;
}
.about-content{
    min-height: 400px;
    display: none;
}
.on{
    display: block;
}