.timeline > ul {
    position: relative;
    list-style: none;
    margin: 0 auto;
    padding: 0px;
    width: 90%;
    max-width: 970px;
}
    /*添加中间的竖线*/
    .timeline > ul:after {
        content: '';
        position: absolute;
        width: 2px;
        top: 0px;
        left: 50%;
        bottom: 0px;
        /*margin-left: -1px;*/
        background: #259aa7;
    }

    .timeline > ul > li {
        width: 50%;
        position: relative;
        background-color: inherit;
        border-radius: 8px;
    }

.tmli-lf {
    padding: 0px 120px 40px 30px;
}

.tmli-rg {
    margin-left: 50%;
    padding: 0px 30px 40px 120px;
}
/*左侧横线*/
.tmli-lf:after {
    content: "";
    position: absolute;
    width: 20px;
    height: 0px;
    top: 26px;
    bottom: 0px;
    right: 70px;
    border-top: 2px solid #259aa7;
}
/*右侧横线*/
.tmli-rg:after {
    content: "";
    position: absolute;
    width: 20px;
    height: 0px;
    top: 26px;
    left: 70px;
    border-top: 2px solid #259aa7;
    z-index: 1;
}

.tmicon {
    position: absolute;
    width: 100px;
    padding: 5px 10px;
    background: #259aa7;
    border-radius: 16px;
    color: white;
    top: 12px;
    z-index: 1;
}

.tmicon-rg {
    right: -50px;
}

.tmicon-lf {
    left: -50px;
}

.tmcontent {
    padding: 10px;
    background-color: #f6f5f4;
    position: relative;
    border-radius: 8px;
    color: #65645f;
}

    .tmcontent > h2 {
        font-size: 1.125em;
        line-height: 2em;
        color: #656565;
        font-weight: 600;
    }

    .tmcontent > p {
        padding: 0px;
        margin: 0px;
        line-height: 1.5em;
    }

    .tmcontent > img {
        position: relative;
        margin-top: 10px;
        width: 100%;
    }

@media screen and (max-width: 767px) {
    .timeline > ul {
        margin-left: 20px;
        /*background: #65645f;*/
    }

        .timeline > ul:after {
            left: -15px;
        }

        .timeline > ul > li {
            width: 100%;
            padding-top: 50px;
        }

    .tmli-lf {
        padding: 10px 0px;
    }

    .tmli-rg {
        margin: 0px;
        padding: 10px 0px;
        z-index: 1;
    }

    .tmicon-rg, .tmicon-lf {
        right: 0px;
        left: 0px;
        z-index: 1;
    }

    /*左侧横线*/
    .tmli-lf:after {
        right: 0px;
        left: -15px;
        border: 1px solid #259aa7;
    }
    /*右侧横线*/
    .tmli-rg:after {
        left: -15px;
        right: 0px;
        border: 1px solid #259aa7;
    }
}