img { max-width: 100%; }
.banner { width: 100%; margin: 0px auto; }
    .banner > img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; }


nav.breadbig { width: 100%; background-color: #f7f7f7; font-size: 14px; color: #999; margin: 0px auto; }
    nav.breadbig > .conn { display: flex; width: 100%; flex-wrap: wrap; max-width: 1920px; padding: 20px 6%; margin: 0px auto; }
        nav.breadbig > .conn > .l { flex: 1; }
            nav.breadbig > .conn > .l > a { font-size: 14px; color: #999; }

@media only screen and (max-width:1280px) {
    nav.breadbig > .conn { padding: 20px 3%; }
}

@media only screen and (max-width:1024px) {
    nav.breadbig > .conn { padding-left: 1rem; padding-right: 1rem; }
}



.title { width: 100%; }
    .title > b { color: #232323; font-size: 2rem; font-weight: 400; position: relative; }
        .title > b::after { position: absolute; content: ""; border-bottom: solid 2px #f08200; width: 28px; left: 0px; bottom: -1.25rem; }

.titlebai > b { color: #fff; }

@media only screen and (max-width:1400px) {
    .title > b { font-size: 1.85rem; }
}

@media only screen and (max-width:1280px) {
    .title > b { font-size: 1.6rem; }
}

@media only screen and (max-width:1024px) {
    .title > b { font-size: 1.45rem; }
}

@media only screen and (max-width:960px) {
    .title > b { font-size: 1.3rem; }
}

@media only screen and (max-width:768px) {
    .title > b { font-size: 1.15rem; }
}

@media only screen and (max-width:480px) {
    .title > b { font-size: 1rem; }
}


.contentbig { width: 100%; padding: 0px 6%; max-width: 1920px; margin: 0px auto; }
    .contentbig > .conn { width: 100%; padding: 6.25rem 0px; }
        .contentbig > .conn > .text { width: 100%; margin-top: 3.25rem; background-color: #fff; }
            .contentbig > .conn > .text > ul { width: 100%; display: flex; flex-wrap: wrap; }
                .contentbig > .conn > .text > ul > li { width: 18%; margin: 1% 1%; text-align: center; padding: 0px; box-shadow: 2px 2px 3px 3px rgba(0,0,0,.05); border-radius: 10px; }

                    .contentbig > .conn > .text > ul > li > img { margin: 0px auto; }
            .contentbig > .conn > .text > h3 { color: #232323; display: block; margin: 1rem 0px; }



@media only screen and (max-width:1280px) {
    .contentbig { padding: 0px 3%; }
}

@media only screen and (max-width:1024px) {
    .contentbig { padding-left: 1rem; padding-right: 1rem; }
        .contentbig > .conn { padding: 4rem 0px; }
            .contentbig > .conn > .text { margin-top: 3rem; }
                .contentbig > .conn > .text > ul > li { width: 31.33%; }
}

@media only screen and (max-width:768px) {
    .contentbig > .conn { padding: 2rem 0px; }
        .contentbig > .conn > .text > ul > li { width: 48%; }
}