.detail_banner {
    width: 100%;
    height: 460px;
    background-size: cover;
    min-width: 1200px;
    /* background: url("https://sjhome-public-new.oss-cn-shenzhen.aliyuncs.com/design/learning_path/1920X460.jpg") no-repeat center top; */
}

.content {
    width: 1200px;
    margin: 0 auto;
    position: relative;
    top: -115px;
}

.learning_info {
    width: 100%;
    background: #FFFFFF;
    box-shadow: 0px 4px 12px 0px rgba(4, 0, 0, 0.1);
    border-radius: 4px;
    display: inline-block;
    padding-bottom: 40px;
}



.learning_chapters_left_fixed {
    width: 200px;
    font-size: 14px;
    background: #FFFFFF;
    box-shadow: 0px 4px 12px 0px rgba(4, 0, 0, 0.1);
    border-radius: 4px;
    overflow: hidden;
    position: fixed;
    top: 100px;
    z-index: 5;
}


.learning_progress_floating {
    width: 69px;
    height: 31px;
    position: absolute;
    top: -34px;
    cursor: pointer;
}

.learning_progress_floating>img {
    position: absolute;
    left: -20px;
    animation-name: up-down;
    animation-duration: 1s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-timing-function: ease-in-out;
    animation-delay: 1s;
}
@keyframes up-down{
    from{
        transform: translateY(0);
    }
    to{
        transform: translateY(-4px);
    }
}
/* 蒙版 */
#overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9999;
  }

/* 弹框 */
.bullet-box {
    display: none;
    width: 350px;
    height: 254px;
    background: #FFFFFF;
    box-shadow: 0px 8px 18px 0px rgba(0, 0, 0, 0.25);
    border-radius: 4px;
    position: absolute;
    top: -50px;
    left: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
    z-index: 10000;
}

.bullet-box img {
    width: 120px;
    height: 115px;
    
}
.bullet-box p{
    font-size: 14px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #000000;
    line-height: 20px;
}
.bullet-btn{
display: flex;
justify-content: space-between;
width: 140px;
}
.bullet-btn>button{
    width: 60px;
    height: 30px;
    background: #F2F2F2;
    border-radius: 4px;
}

.bullet-btn>button:nth-child(1){
    background: #FFD200;

}
.info_intro {
    text-align: justify;
    width: 100%;
    padding: 0 40px;
    margin: 40px 0;
    box-sizing: border-box;
    font-size: 16px;
    color: #333333;
    line-height: 28px;
}

.infos {
    width: 100%;
    margin: 0 auto;
    position: relative;
    box-sizing: border-box;
    padding: 0 40px;
}

.info_left {
    width: auto;
    height: 30px;
    line-height: 30px;
    text-align: center;
    float: left;
}

.info_right {
    float: right;
    position: relative;
}

.learning_progress_total {
    width: 380px;
    height: 30px;
    background: #F2F2F2;
    border-radius: 15px;
    float: left;
    position: relative;
    border-radius: 15px;
    overflow: hidden;
}

.learning_progress_current {
    width: 245px;
    height: 30px;
    background: #FFD200;
    border-radius: 15px;
}


.start_btn {
    float: right;
    width: 90px;
    height: 30px;
    line-height: 30px;
    color: white;
    cursor: pointer;
    text-align: center;
    background: #FF9C01;
    border-radius: 4px;
    margin-left: 40px;
}

.progress_text {
    width: 100%;
    height: 30px;
    line-height: 30px;
    text-align: center;
    position: absolute;
    top: 0;
}

.info_left span {
    vertical-align: middle;
    margin-right: 20px;
}

.info_left img {
    width: 25px;
    height: 25px;
    margin-right: 10px;
    vertical-align: middle;
}

.learning_chapters_left {
    width: 200px;
    font-size: 14px;
    background: #FFFFFF;
    box-shadow: 0px 4px 12px 0px rgba(4, 0, 0, 0.1);
    border-radius: 4px;
    overflow: hidden;
    float: left;
}

.chapter_item {
    width: 100%;
    padding: 15px 15px 15px 20px;
    color: #999999;
    cursor: pointer;
}

.chapter_item:hover {
    background: #FFD200;
    color: #0E1B2A
}


.chapter_item_active {
    background: #FFD200;
    color: #0E1B2A
}

.learning_list_right {
    float: right;
    width: 960px;
}

.learning_item {
    width: 100%;
    background: #FFFFFF;
    box-shadow: 0px 4px 12px 0px rgba(4, 0, 0, 0.1);
    border-radius: 4px;
    float: right;
    margin-bottom: 40px;
    padding-bottom: 10px;
}


.chapter_title {
    font-size: 20px;
    font-weight: bold;
    color: #0E1B2A;
    float: left;
}


.course_info {
    padding: 10px;
    border-radius: 0 0 4px 4px;
}

.course_list {
    height: auto;
    padding: 10px;
}

.course_content {
    margin-top: 40px;
}

.chapter_info {
    padding: 18px 20px 16px 20px;
    border-bottom: 1px solid #F2F2F2;
    height: 60px;
}

.chapter_info_right {
    float: right;
    font-size: 12px;
    color: #333333;
    vertical-align: middle;
}

.chapter_info_right span {
    margin-right: 10px;
    line-height: 25px;
    display: inline-block;
}

.chapter_info_right img {
    margin-right: 6px;
    vertical-align: text-top;
}

.course_item {
    width: 215px;
    background: #FFFFFF;
    border-radius: 4px;
    float: left;
    margin: 10px;
    cursor: pointer;
    overflow: hidden;
    border: 1px solid #eee;
}

.course_cover {
    width: 100%;
    height: 126px;
    background-size: cover;
    background: #EEEEEE;
    border-radius: 4px 4px 0px 0px;
    -webkit-transition: all 1.4s;
    -moz-transition: all 1.4s;
    -o-transition: all 1.4s;
    transition: all 1.4s;
}

.course_cover:hover {
    -webkit-transform: scale(1.1);
    -moz-transform: scale(1.1);
    -o-transform: scale(1.1);
    transform: scale(1.1);
    -ms-transform: scale(1.1);
}

.course_title {
    height: 16px;
    font-size: 14px;
    color: #000000;
    margin: 9px 0 0 0;
    line-height: 15px;
    /* white-space: nowrap; */
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.course_tag {
    width: 100%;
    font-size: 12px;
    color: #BBBBBB;
    margin: 12px 0 0 0;
}

.course_tag span {
    margin-right: 10px;
}

.course_lesson_info span {
    margin-right: 12px;
}

.course_lesson_info {
    height: 12px;
    font-size: 12px;
    font-weight: 400;
    color: #BBBBBB;
    margin: 9px 0 0 0;
}

.course_status {
    width: 100%;
    position: relative;
    height: 25px;
    margin-top: 10px;
    font-size: 12px;
}

.learning_status {
    float: left;
    height: 25px;
    line-height: 23px;
    border-radius: 4px;
    color: #999999;
    text-align: center;
}

.course_start_btn {
    cursor: pointer;
    float: right;
    width: 60px;
    height: 25px;
    line-height: 23px;
    border: 1px solid #BBBBBB;
    border-radius: 4px;
    color: #BBBBBB;
    text-align: center;
}

.course_start_btn:hover {
    color: white;
    background: #FF9C01;
    border: 1px solid #FF9C01;
}

@media screen and (min-width: 1600px) {
    .content {
        width: 1380px;
    }

    .learning_progress_total {
        width: 500px;
    }

    .learning_list_right {
        width: 1140px;
    }

    .course_item {
        width: 260px;
        border: 1px solid #eee;
        border-radius: 4px;
    }

    .course_cover {
        height: 152px;
    }
}