.course-container {
    width: 100%;
	position: relative;
}

.course-container .course-sticky {
    
    height: calc(100% - 382.41499999999996px);
    /* overflow: hidden; */
    transition: transform 0.5s ease-in-out;
    overflow-x: hidden;
    width: 100%;
}

.course-container .course-sticky .course-content {
    width: -moz-fit-content;
    width: fit-content;
    height: calc(100% - 382.41499999999996px);
    overflow: hidden;
    background: url(../img/course/bkg.jpg) no-repeat 0 0;
    background-size: 100% 100%;
}

.course-container .course-sticky .course-content .course-title {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
	margin-top: 100px;
    width: 100vw;
    text-align: center;
}

.course-container .course-sticky .course-content .course-title span {
    line-height: 58px;
    font-size: 48px;
    font-family: SourceHanSansCN,SourceHanSansCN-Bold;
    font-weight: 700;
    color: #f3ecec;
}

.course-container .course-sticky .course-content .course-scroll-anim {
    margin-top: 266px;
    height: calc(100% - 382.41499999999996px);
    width: -moz-fit-content;
    width: fit-content;
	
}

.course-container .course-sticky .course-content .course-scroll-anim .course-img-contaier {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 100%;
    height: calc(100% - 382.41499999999996px);
    overflow: hidden;
    background: url(../img/course/bkg.jpg) no-repeat 0 0;
    background-size: 100% 100%;
	background-position:bottom;
}

.course-container .course-sticky .course-content .course-scroll-anim .course-history {
    display: flex;
    flex-wrap: nowrap; /* 防止换行 */
    list-style-type: none; /* 移除列表默认的圆点 */
    margin: 0;
    padding: 0;
	background: url(../img/course/mountain.png) no-repeat 0 0;
    background-size: 100% 100%;
	width: -moz-fit-content;
    width: fit-content;
	height: 600px;
   

}

.course-container .course-sticky .course-content .course-scroll-anim .course-img-contaier-top {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 3;
    width: 100%;
    height: calc(100% - 382.41499999999996px);
    overflow: hidden;
    background: url(../img/course/mountain.png) no-repeat 0 0;
    background-size: 100% 100%;
}

.course-container .course-sticky .course-content .course-scroll-anim .course-history-item {
    position: relative;
	padding-left: 9.69px;
	padding-right: 19.38px;
	width: 280px;
	float:left;
}

.course-container .course-sticky .course-content .course-scroll-anim .course-history-item ::before {

    content: "";
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 1px;
    height: 100%;
    display: block;
    background-color: rgba(225, 223, 223, 0.5);
}

.course-container .course-sticky .course-content .course-scroll-anim .course-history-item::after {

    content: "";
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    width: 1px;
    height: 34px;
    display: block;
    background-color:#f3ecec;
}

.course-container .course-sticky .course-content .course-scroll-anim .course-history .course-history-item .course-history-item-title {
    width: 100%;
    font-size: 32px;
    font-family: SourceHanSansCN,SourceHanSansCN-Medium;
    font-weight: 600;
    text-align: left;
    color: #f3ecec;
    line-height: 34px;
}

.course-container .course-sticky .course-content .course-scroll-anim .course-history .course-history-item .course-history-item-text {
	height: auto;
    font-size: 14px;
    font-family: SourceHanSansCN,SourceHanSansCN-Medium;
    font-weight: 500;
    text-align: left;
    color: #f3ecec;
	margin-top: 18px;
    line-height: 20px;
	word-break:break-all;
    word-wrap:break-word;
}