.jw_develep {
    background: url("../../../static/images/courseBg.png") no-repeat;
    padding: 30px 0;
    overflow: hidden;
    background-size: cover;
}

.courseBox {
    margin-top: 50px;
    width: 100%;
    float: left;
}

.jw_develep-item {
    width: 100%;
    margin: 0 auto;
    overflow: hidden;
    list-style-type: none;
    padding-inline-start: 10px;
}

.jw_develep-item>li {
    width: 100%;
    float: left;
}

.jw_develep-item>li .boxBorder {
    width: calc(50% + 1px);
    position: relative;
}

.jw_develep-item>li:nth-child(2n + 1) .boxBorder {
    float: left;
    border-right: 1px solid #4987c2;
    box-sizing: border-box;
}

.jw_develep-item>li:nth-child(2n) .boxBorder {
    float: right;
    border-left: 1px solid #4987c2;
}

.jw_develep-item>li:last-child .boxBorder {
    padding-bottom: 60px;
}

.jw_develep-item>li .dotLine {
    background: url("../../../static/images/dotLine.png") no-repeat;
    width: 0px;
    height: 18px;
    position: absolute;
    top: 50%;
    margin-top: -9px;
    z-index: 5;
    background-size: 100% 100%;

}

.jw_develep-item>li:nth-child(2n + 1) .dotLine {
    right: -120px;
}

.jw_develep-item>li:nth-child(2n) .dotLine {
    left: -120px;
    transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    -o-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
}

.jw_develep-item>li:last-child .dotLine {
    background: url("../../../static/images/dotLine.png") no-repeat;
    height: 23px;
    width: 0px;
    left: -120px;
    margin-top: -11.5px;
}

.jw_develep-item>li:last-child {
    position: relative;
}

.jw_develep-item>li:last-child::after {
    width: 8px;
    height: 8px;
    background: #fff;
    border: 1px solid #4987c2;
    border-width: 1px;
    position: absolute;
    content: " ";
    bottom: 0px;
    left: 50%;
    margin-left: -5px;
    border-radius: 50%;
}

.jw_develep-item>li .itemMain {
    width: 316px;
    position: relative;
    background: url("../../../static/images/itembg.png") no-repeat center bottom;
    background-color: #fff;
    border-radius: 3px;
    box-shadow: 0 5px 20px 0 rgba(165, 73, 11, 0.09);
    -webkit-box-shadow: 0 5px 20px 0 rgba(165, 73, 11, 0.09);
    -moz-box-shadow: 0 5px 20px 0 rgba(165, 73, 11, 0.09);
    padding: 20px;
}

.jw_develep-item>li:nth-child(2n + 1) .itemMain {
    border-right: 6px solid #4987c2;
    float: left;
    left: -100px;
}

.jw_develep-item>li:nth-child(2n) .itemMain {
    border-left: 6px solid #4987c2;
    float: right;
    margin-right: 20px;
}

.jw_develep-item>li .itemMain h2 {
    font-size: 24px;
    color: #4987c2;
    font-weight: bold;
    margin: 0;
    margin-bottom: 20px;
    line-height: 28px;
}

.jw_develep-item .itemIcon {
    background: #4987c2;
    color: white;
    width: 32px;
    float: left;
    text-align: center;
    height: 30px;
    border-radius: 40px;
    margin-right: 7px;
}

.jw_develep-item>li .itemMain .list_li {
    margin-top: 5px;
    overflow: hidden;
}

.jw_develep-item>li .itemMain .list_li li {
    font-size: 14px;
    color: #333;
    line-height: 24px;
}

.right_contents p {
    text-indent: 2em;
    /* 使用em单位进行缩进 */
}


/* 手机开始 */
@media screen and (max-width: 768px) {
    .jw_develep-item>li .itemMain {
        margin-bottom: 30px;
    }

    .jw_develep-item>li .itemMain h2 {
        font-size: 17px;
    }
}