.dash {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    width: 48px;
    height: 3px;
    background: #03a9f4;
}

.banner {
    width: 100%;
    height: 600px;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
}

.banner_float {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.bf_title {
    color: #fff;
    text-align: center;
    font-size: 28px;
    line-height: 1.1;
    margin-bottom: 30px;
}

.bf_subtitle {
    font-size: 18px;
    color: hsla(0, 0%, 100%, .85);
    margin-top: 14px;
    font-weight: 400;
    margin-bottom: .5em;
}

.btn_group {
    text-align: center;
}

.bf_btn {
    line-height: 36px;
    height: 36px;
    padding: 0 18px;
    margin: 0 12px 0 0;
    border-radius: 5px;
    font-size: 18px;
    display: inline-block;
    background: #fff;
    color: #03a9f4;
    transition: color .2s ease;
    cursor: pointer;
    border: none;
    margin-top: 24px;
    position: relative;
}

.bf_btn:hover img {
    display: block;
}

.bf_btn img {
    position: absolute;
    right: 0;
    bottom: 100%;
    display: none;
}

.bf_btn:hover {
    color: #02a2ec;
}

.bf_btn2 {
    background: none;
    border: 1px solid #fff;
    color: #fff;
}

.banner_summary {
    display: flex;
    width: 80%;
    height: 140px;
    background-color: #fff;
    position: absolute;
    bottom: -80px;
    left: 50%;
    transform: translate(-50%, 0);
    /*box-shadow: 0 0 2px rgb(0 0 0 / 15%);*/
    box-shadow: 0 0 2px rgba(0, 0, 0, 0);
    padding: 36px;
    box-sizing: border-box;
}

.bs_item {
    flex: 1;
    border-left: 3px solid #eb2f96;
    padding-left: 15px;
}

.bs_title {
    text-transform: uppercase;
    font-size: 16px;
    line-height: 20px;
    color: rgba(0, 0, 0, .65);
    white-space: nowrap;
}

.bs_impor {
    font-size: 20px;
    font-weight: 400;
    line-height: 30px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bs_desc {
    font-size: 14px;
    line-height: 20px;
    color: rgba(0, 0, 0, .45);
}

.section1 {
    width: 80%;
    margin: 0 auto;
    padding: 150px 220px 0 0;
    box-sizing: border-box;
    display: flex;
}

.section1_left {
    border-radius: 4px;
}

.sl_promotion {
    background: #eb2f94;
    color: #fff;
    padding: 12px 18px;
}

.sl_promotion h3 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 10px;
}

.sl_promotion p {
    margin: 6px 0;
    font-size: 14px;
    line-height: 1.5;
}

.section1_left > p {
    margin-top: 12px;
    margin-bottom: 1em;
    font-size: 16px;
}

.section1_right {
    flex: 1;
    margin-left: 40px;
}

.sr_background {
    width: 100%;
    height: 216px;
    background: url(../images/bg.html);
}

.sr_content {
    padding: 10px;
    border-left: 1px solid #eee;
    border-right: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.sr_content h4 {
    font-size: 16px;
    line-height: 1.5;
    display: flex;
    align-items: center;
    margin-bottom: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
}

.sr_content p {
    color: rgba(0, 0, 0, .65);
    font-size: 14px;
}

.section2 {
    margin-top: 100px;
}

.section2_title {
    width: 80%;
    margin: 0 auto;
    position: relative;
}

.section2_title h2 {
    font-size: 32px;
    padding-bottom: 18px;
    margin-bottom: 36px;
}

.section2_title .dash {
    margin: 0;
}

.section2_wrapper {
    height: 100px;
    background: url(../images/java101/offer.png);
    background-size: cover;
    position: relative;
    padding-top: 84px;
    padding-bottom: 120px;
    margin-bottom: -48px;
    overflow: hidden;
}

.sc2_background {
    background-color: #00629f;
    background-image: linear-gradient(-20deg, #00629f, #003cad);
    opacity: .75;
    top: 0;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.sc2_mask {
    height: 84px;
    border-right: 1920px solid transparent;
    border-bottom: 84px solid #fff;
    position: absolute;
    bottom: 0;
    left: 0;
    z-index: 3;
}

.section2_content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    margin-left: -220px;
}

.section2_content h4 {
    font-size: 24px;
    color: #fff;
    margin-bottom: 20px;
}

.sc2_btn_group {
    text-align: center;
}

.sc2_btn {
    color: #fff;
    border: 2px solid hsla(0, 0%, 100%, .8);
    line-height: 32px;
    padding: 0 18px;
    background: none;
    margin: 0 10px;
    border-radius: 5px;
    cursor: pointer;
}

.sc2_btn:hover {
    background: #fff;
    color: #003cad;
}


.section3 {
    width: 80%;
    margin: 100px auto 0;
    box-sizing: border-box;
    padding-right: 220px;
}

.section3_title {
    font-size: 32px;
    padding-bottom: 10px;
    margin-bottom: 20px;
    position: relative;
}

.section3_title .dash {
    margin: 0;
}

.section3_icon_group {
    display: flex;
    margin: 50px 0;
}

.section_icon_item {
    flex: 1;
    text-align: center;
}

.section_icon_item .icons img {
    height: 96px;
}

.section_icon_item .texts {
    font-size: 18px;
}

.section3_container {
    display: flex;
}

.section3_item {
    flex: 1;
}

.section3_item .indicator {
    position: relative;
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    margin-bottom: 20px;
}

.section3_item .line {
    width: 100%;
    height: 2px;
    background: #e8e8e8;
}

.section3_item .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #e8e8e8;
    margin-top: -7px;
    -webkit-transition: background .2s ease;
    transition: background .2s ease;
}

.section3_item .content {
    padding-right: 50px;
}

.section3_item .title {
    font-size: 18px;
    margin-bottom: 15px;
}

.section3_item .desc {
    font-size: 16px;
    color: rgba(0, 0, 0, .65);
}

.section4 {
    width: 80%;
    margin: 100px auto 0;
}

.section4_title {
    font-size: 32px;
    padding-bottom: 10px;
    margin-bottom: 20px;
    position: relative;
}

.section4_title .dash {
    margin-left: 0;
}

.section4_contaienr {
    margin-top: 50px;
}

.section5 {
    width: 80%;
    margin: 100px auto 0;
}

.section5_title {
    font-size: 32px;
    padding-bottom: 10px;
    margin-bottom: 20px;
    position: relative;
}

.section5_title .dash {
    margin-left: 0;
}

.section5_wrapper {
    padding-right: 220px;
    box-sizing: border-box;
    margin: 50px 0;
}

.section5_wrapper::after {
    content: '';
    display: block;
    clear: both;
    height: 0;
}

.section5_item {
    width: 31%;
    box-sizing: border-box;
    /*box-shadow: 0 0 2px rgb(0 0 0 / 15%);*/
    box-shadow: 0 0 2px rgba(0, 0, 0, 0);
    position: relative;
    cursor: pointer;
    margin: 0 10px;
    margin-bottom: 30px;
}

.section5_item:hover .section5_item_cover {
    opacity: 1;
}

.section5_item_bg {
    height: 215px;
    overflow: hidden;
}

.section5_item_bg img {
    width: 100%;
}

.section5_item_cover {
    width: 100%;
    height: 215px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    background: rgba(3, 169, 244, .9);
    color: #fff;
    padding: 36px;
    box-sizing: border-box;
    font-size: 14px;
    opacity: 0;
}

.section5_item_text {
    padding: 10px;
    box-sizing: border-box;
}

.section5_item_text p {
    font-size: 16px;
    margin-bottom: 5px;
}

.section6 {
    width: 80%;
    margin: 80px auto 0;
}

.section6_title {
    font-size: 32px;
    padding-bottom: 10px;
    margin-bottom: 20px;
    position: relative;
}

.section6_title .dash {
    margin-left: 0;
}

.section6_wrapper {
    padding-right: 220px;
}

.section6_container {
    /*box-shadow: 0 0 2px rgb(0 0 0 / 15%);*/
    box-shadow: 0 0 2px rgba(0, 0, 0, 0);
    border-radius: 2px;
    background: #fff;
    padding: 30px 10% 48px;
    position: relative;
}

.section6_card_tag {
    width: 164px;
    height: 59px;
    position: absolute;
    background: url(../images/java101/highlight.svg);
    top: -20px;
    left: -215px;
    text-align: center;
    color: #fff;
    line-height: 50px;
    font-size: 20px;
}

.section6_card_title {
    font-size: 20px;
    margin-bottom: .5em;
    color: rgba(0, 0, 0, .85);
}

.section6_card_desc {
    margin-bottom: 1em;
    color: rgba(0, 0, 0, .65);
}

.section6_card_subtitle {
    color: rgba(0, 0, 0, .65);
}

.section6_card_subtitle span {
    font-weight: bold;
}

.section6_card_container {
    margin-top: 50px;
}

.section6_card_list {
    position: relative;
    left: 70px;
    margin: 0;
    padding: 0 0 20px;
    font-size: 14px;
    list-style: none;
    box-sizing: border-box;
}

.section6_card_tail {
    position: absolute;
    top: 10px;
    left: 4px;
    height: calc(100% - 10px);
    border-left: 2px solid #e8e8e8;
}

.section6_card_head {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: #fff;
    /*border: 2px solid transparent;*/
    border-radius: 100px;
    color: #03a9f4;
    border-color: #03a9f4;
}

.section6_card_content {
    position: relative;
    top: -6px;
    margin: 0 0 0 18px;
    word-break: break-word;
    padding-left: 24px;
}

.section6_card_content h4 {
    font-size: 18px;
    line-height: 18px;
    font-weight: 400;
    color: #03a9f4;
    margin-bottom: 12px;
}

.section6_card_content p {
    margin-bottom: 6px;
    margin-top: 12px;
}

.section7 {
    width: 80%;
    margin: 80px auto 0;
}

.section7_title {
    font-size: 32px;
    padding-bottom: 10px;
    margin-bottom: 20px;
    position: relative;
}

.section7_title .dash {
    margin-left: 0;
}

.section7_wrapper {
    padding-right: 220px;
}

.section7_wrapper ul {
    /*box-shadow: 0 0 2px rgb(0 0 0 / 15%);*/
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.15);
    border-radius: 2px;
    background: #fff;
    padding: 30px 30px 10px;
}

.section7_wrapper li {
    margin-bottom: 30px;
}

.section7_wrapper li h5 {
    font-size: 18px;
    margin-bottom: .5em;
    color: rgba(0, 0, 0, .85);
}

.section7_wrapper li p {
    font-size: 16px;
    margin-bottom: .5em;
    color: rgba(0, 0, 0, .65);
    text-indent: 20px;
}

.section8 {
    width: 80%;
    margin: 80px auto 0;
    padding-right: 220px;
    display: flex;
    box-sizing: border-box;
    margin-bottom: 100px;
}

.section8_left,
.section8_right {
    flex: 1;
    /*box-shadow: 0 0 2px rgb(0 0 0 / 15%);*/
    box-shadow: 0 0 2px rgba(0, 0, 0, 0);
    border-radius: 2px;
    background: #fff;
}

.section8_left {
    margin-right: 30px;
}

.section8_left_top {
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 24px;
    background: #03a9f4;
    box-sizing: border-box;
    color: #fff;
}

.section8_left_content {
    list-style: none;
    padding: 6px 12px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 16px;
    color: rgba(0, 0, 0, .65);
    padding-top: 50px;
}

.section8_left_content p {

    margin-bottom: .5em;
}

.section8_left_content button {
    width: 60%;
    line-height: 36px;
    height: 36px;
    padding: 0 18px;
    font-size: 16px;
    background: #03a9f4;
    color: #fff;
    border: none;
    border-radius: 5px;
    margin-top: 10px;
}

.section8_right {
    text-align: center;
    padding-top: 30px;
}

.section8_right h3 {
    font-size: 20px;
    margin-bottom: .5em;
}

.section8_right p {
    color: rgba(0, 0, 0, .65);
    margin-bottom: .5em;
}


.sectionfloat {
    width: 200px;
    /*box-shadow: 0 0 2px rgb(0 0 0 / 15%);*/
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.15);
    background: hsla(0, 0%, 100%, .9);
    border-radius: 4px;
    overflow: hidden;
    box-sizing: border-box;
    position: absolute;
    top: 750px;
    right: 10%;
    z-index: 10;
}

.sectionfloat li {
    display: flex;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
}

.sectionfloat li a:hover {
    background: #3bbdf8;
    color: #fff;
}

.sectionfloat li a {
    flex: 1 1 auto;
    padding: 18px 24px;
    text-align: center;
    font-size: 15px;
    color: rgba(0, 0, 0, .65);
    -webkit-transition: all .2s ease;
    transition: all .2s ease;
}

.sectionfloat li .active {
    background: rgba(0, 102, 204, 1);
    color: #fff;
}