header .banner {

 background-image: url(../image/banner4.png);   

}

.title {

    color: black;

    font-size: 28px;

    margin: 80px auto 20px;

    font-weight: bolder;

}

.underline {

    width: 50px;

    height: 0;

    border-bottom: 2px solid #0c7fa4;

    margin: 0 auto 30px;

}

main .product-nav {
    background: #F8F8F8;
}

main .product-nav .product-nav-box div{
    max-width: 1500px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    height: 80px;
}

main .product-nav .product-nav-box div img {
    width: 14px;
    margin-right: 10px;
}

main .product-nav .product-nav-box ul {
    display: flex;
    align-content: center;
    justify-content: center;
    flex-wrap: wrap;
}

main .product-nav .product-nav-box ul li a {
    margin: 0 25px;
    line-height: 80px;
    display: block;
    border-bottom: #F8F8F8 solid 2px;
    text-decoration: none;
    color: #666666;
}

main .product-nav .product-nav-box ul li a:hover {
    border-bottom: #1344A8 solid 2px;
    color: #1344A8;
}

main .product-class {
    display: flex;
    max-width: 1500px;
    margin: auto;
    justify-content: flex-start;
    align-items: center;
    flex-wrap: wrap;
    padding: 20px;
}

main .product-class li {
    padding: 0;
    margin-right: 10px;
    margin-bottom: 10px;
}

main .product-class li a{
    display: block;
    line-height: 40px;
    padding: 10px 20px;
    color: #333333;
    text-decoration: none;
    border: 1px solid black;
}

main .product-class li .active {
    color: white !important;
    background-color: #1344A8;
    border: transparent 1px solid;
}

main .product-class li a:hover {
    color: white;
    background-color: #1344A8;
    border: transparent 1px solid;
}

main .one-product {

    width: 321px;

    display: block;

    background: #ffffff;

    margin:0 auto 26px;

    text-decoration: none;

    border: 1px solid #e6e6e6;

    border-radius: 5px;

    color: #333333;

    transition: .2s;

}



main .one-product:hover {

    border: none;

    box-shadow: 0px 2px 16px 6px rgba(164,164,164,0.10); 

    transform: scale(1.02);

}

main .one-product:hover p {
    color: #1344A8;
}
main .one-product img {

    display: block;

    width: 100%;

    opacity: 1;

    margin:auto;

}



main .one-product p {

    padding: 20px 0;

    text-align: center;

}

@media screen and (min-width:1350px){

    .container {

        width: 1350px;

    }

}



@media screen and (max-width: 780px) {

    main .product-class {

        margin-bottom: 20px;

    }

    main .product-class li a {
        font-size: 14px;
        padding: 5px 10px;
    }

    main .product-nav {

        display: block;

        padding: 20px 0;

    }


    main .product-nav .product-nav-box ul li a {

        line-height: 30px;

        margin: 3px;
        padding: 0 5px;

        background: white;

        font-size: 12px;
    }

    main .one-product {
        width: 100%;
    }

    

}