.banner { width: 100%; position: relative; margin-top: 50px; overflow: hidden; }
.banner > img { width: 100%; min-height: 500px; }
.banner_content { position: absolute; left: 12.5%; top: calc(50% - 10px); width: 50%; color: #333333; text-transform: Uppercase; }
.banner_content h1 { font-family: "Montserrat-Medium"; font-size: 36px; margin-bottom: 30px; }
.banner_content p { display: block; font-family: "Montserrat-Medium", serif; font-size: 24px; margin-bottom: 30px; }
.banner_content .arrow { width: 20px; height: 40px; /*overflow: hidden;*/ position: relative; }
.banner_content .arrow img { width: 100%; position: absolute; top: 0; left: 0; animation: showHideDot 1.5s ease-in-out infinite; }

@keyframes showHideDot {
    0% { top: 0; }
    50% { top: 20%; }
    100% { top: 0; }
}

@media screen and (max-width:1220px) {
    .banner > img { width: auto; margin-left: calc(50% - 600px); height: 500px; }
    .banner_content h1 { font-size: 30px; margin-bottom: 30px; }
    .banner_content p { font-size: 24px; margin-bottom: 30px; }
}

@media screen and (max-width:890px) {
}

@media screen and (max-width:680px) {
    .banner_content { position: absolute; left: 12.5%; top: calc(35% - 50px); width: 75%; color: white; text-transform: Uppercase; }
    .banner_content h1 { font-size: 24px; margin-bottom: 20px; }
    .banner_content p { font-size: 16px; margin-bottom: 20px; }
    .banner_content .arrow { width: 10px; height: 40px; /*overflow: hidden;*/ position: relative; }
}






.case_read { width: 75%; margin: 0 auto; margin-top: 50px; max-width: 1360px; }
.case_read_title { width: calc(100% - 100px); background-color: #393939; padding: 50px; }
.case_read_title .title { width: 40%; float: left; font-family: "SourceHanSansCN-Normal"; font-size: 32px; color: white; }
.case_read_title .title span { font-family: "Montserrat-Medium"; font-size: 18px; color: #cccccc; }
.introduce { float: left; width: 60%; }
.introduce p { font-family: "SourceHanSansCN-ExtraLight"; font-size: 12px; line-height: 24px; color: white; }
.introduce p:last-of-type { margin-bottom: 100px; }
.introduce p span { font-family: "Montserrat-ExtraLight"; }
.introduce .project_introduce { font-family: "SourceHanSansCN-Light"; font-size: 12px; line-height: 20px; color: white; }
.case_read > p { width: 100%; margin-top: 20px; margin-bottom: 20px; }
.case_read > p:first-child { margin-top: 0; }
.case_read > p img { width: 100%; display: block; }




.page { width: 100%; margin-top: 50px; margin-bottom: 50px; position: relative; height: 20px; }
.page_zuo { float: left; height: 10px; }
.page_zuo img { height: 100%; margin-top: 7px; }
.page_home { float: left; margin-left: calc(50% - 70px); height: 100%; }
.page_home img { height: 100%; }
.page_you { float: right; height: 10px; }
.page_you img { height: 100%; margin-top: 7px; }
.page_zuo img { float: left; }
.page_zuo span { float: left; color: #eeeeee; font-size: 18px; font-family: "Montserrat-Medium"; margin-left: 10px; }
.page_zuo span:hover { color: #cdcdcd; }
.page_you img { float: right; }
.page_you span { float: right; color: #eeeeee; font-size: 18px; font-family: "Montserrat-Medium"; margin-right: 10px; }
.page_you span:hover { color: #cdcdcd; }

@media screen and (max-width:1200px) {
    .case_read_title .title { font-size: 24px; }
    .case_read_title .title span { font-size: 14px; }
}

@media screen and (max-width:800px) {
    .case_read_title .title { width: 100%; }
    .introduce { float: left; width: 90%; margin-top: 20px }
    .introduce p { margin-bottom: 40px; }
}

@media screen and (max-width: 550px) {
    .case_read_title .title { width: 100%; font-size: 20px; }
    .introduce { float: left; width: 100%; margin-top: 20px }
    .introduce p { font-size: 10px; line-height: 20px; margin-bottom: 40px; }
    \}
    .page { margin-top: 30px; height: 18px; }
    .page_zuo img { margin-top: 4px; }
    .page_zuo span { font-size: 14px; }
    .page_you span { font-size: 14px; }
    .page_you img { margin-top: 4px; }
}