.about-nav {
    width: 60%;
    margin: 0 auto;
    border-bottom: 1px solid #dfdfdf;
    background-color: #FFF;
}

.about-nav li {
    float: left;
    width: 50%;
    margin: 20px 0 0;
    text-align: center;
}

.about-nav li a {
    font-size: 18px;
}

.about-nav li a:hover {
    color: #3CACC7;
}

.active1 {
    width: 40%;
    margin: 0 auto;
    display: block;
    height: 40px;
    color: #3CACC7;
    border-bottom: 1px solid #3CACC7;
}

.tabbox ul {
    width: 17%;
    float: left;
    margin-right: 5%;
}

.tabbox ul li {
    color: #333;
    background-color: rgba(60,172,199,0.1);
    font-size: 18px;
    width: 100%;
    margin-bottom: 10px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    cursor: pointer;
}

.tabbox ul .active {
    background-color: rgba(60,172,199,1);
    color: #fff;
}

.tabbox .content {
    width: 78%;
    float: right;
}

.tabbox .content > div {
    display: none;
}

.tabbox .content > div.active {
    display: block;
}