.zhinan {
    width: 100%;
    margin: 0 auto;
    padding-bottom: 45px;
    background: #f6f6f6;
    overflow: hidden;
}

.zhinan .content {
    padding-left: 280px;
    min-height: 400px;
    overflow: hidden;
}

.zhinan .page-contact {
    width: 80%;
    margin: 0 auto;
    padding: 30px;
    background: #fff;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    border-radius: 3px;
    -webkit-border-radius: 3px;
    overflow: hidden;
}

.zhinan .left-nav {
    float: left;
    width: 260px;
    margin: 0 0 0 -280px;
}

.zhinan .left-nav li {
    border: 1px solid #e7e7e7;
    padding: 20px;
    font-size: 18px;
    line-height: 20px;
    margin: 0 0 15px;
    cursor: pointer;
}

.zhinan .left-nav li span {
    font-size: 14px;
    padding: 0 10px 0 0;
}

.zhinan .left-nav li.active {
    background: #63c7f2;
    color: #fff;
}

.zhinan .contact-item {
    display: none;
}

.zhinan .contact-item.active {
    display: block;
}

.zhinan .contact-content {
    display: flex;
    justify-content: space-between;
    min-height: 500px;
}

.zhinan .address {
    width: 60%;
    padding: 0 0 0 20px;
    font-size: 16px;
    line-height: 1.6;
    box-sizing: border-box;
    flex: 1;
}
.zhinan .address .pic {}
.zhinan .address .pic img{
    display: block;
    width: 100%;
    height: auto;
}

.zhinan .address strong {
    font-weight: bold;
    color: #63c7f2;
}

.zhinan .address .info {
    margin: 5px 0 0 0;
}

.zhinan .address .info:first-child {
    margin: 0;
}

.zhinan .address .info h3 {
    font-size: 20px;
    font-weight: bold;
    color: #63c7f2;
    line-height: 1.8;
}

.zhinan .map {
    width: 400px;
}

.zhinan .map .map-content {
    height: 100%;
}

@media screen and (max-width: 1300px) {
    .zhinan .content {
        padding: 0;
    }

    .zhinan .left-nav {
        float: none;
        width: auto;
        margin: 0 0 20px;
    }

    .zhinan .left-nav ul {
        overflow: hidden;
        margin: 0 0 0 -20px;
    }

    .zhinan .left-nav ul li {
        float: left;
        width: 280px;
        margin: 0 0 0 20px;
    }
}

@media screen and (max-width: 1200px) {
    .zhinan .page-contact {
        width: 90%;
        padding: 10px;
    }
}

@media screen and (max-width: 768px) {
    .zhinan {
        padding-bottom: 30px;
    }
    .zhinan .page-contact {
        width: 90%;
        padding: 0;
        background: none;
    }
    .zhinan .left-nav ul{
        display: flex;
        margin-left: -5px;
    }
    .zhinan .left-nav ul li {
        float: none;
        flex: 1;
        font-size: 14px;
        padding: 10px;
        line-height: 18px;
        margin-left: 5px;
        display: flex;
        align-items: center;
    }
    .zhinan .left-nav ul li span{display: none;}

    .zhinan .contact-content {
        flex-wrap: wrap-reverse;
    }

    .zhinan .address,
    .zhinan .map {
        width: 100%;
    }
    .zhinan .address {
        margin-bottom: 20px;
        padding-left: 0;
        font-size: 14px;
    }

    .zhinan .address .info h3 {
        font-size: 16px;
    }

    .zhinan .map .map-content {
        height: 300px;
    }
}