.DP-timeline {
        list-style: none;
        padding: 20px 0 20px;
        position: relative;
    }
    .DP-timeline:before {
        top: 0;
        bottom: 0;
        position: absolute;
        content: " ";
        width: 3px;
        background-color: #eeeeee;
        left: 50%;
        margin-left: -1.5px;
    }
    .DP-timeline > li {
        margin-bottom: 20px;
        position: relative;
        /*
        border: 1px solid #d4d4d4;
        border-radius: 12px;
        padding: 10px;
        webkit-box-shadow: 0 1px 6px rgb(0 0 0 / 18%);
        box-shadow: 0 1px 6px rgb(0 0 0 / 18%);
        */
    }
    .DP-timeline > li:before,
    .DP-timeline > li:after {
        content: " ";
        display: table;
    }
    .DP-timeline > li:after {
        clear: both;
    }
    .DP-timeline > li:before,
    .DP-timeline > li:after {
        content: " ";
        display: table;
    }
    .DP-timeline > li:after {
        clear: both;
    }
    .DP-timeline > li > .DP-timeline-panel {
        width: 46%;
        float: left;
        border: 1px solid #d4d4d4;
        border-radius: 2px;
        padding: 20px;
        position: relative;
        -webkit-box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
        box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
    }
    .DP-timeline > li > .DP-timeline-panel:before {
        position: absolute;
        top: 26px;
        right: -15px;
        display: inline-block;
        border-top: 15px solid transparent;
        border-left: 15px solid #ccc;
        border-right: 0 solid #ccc;
        border-bottom: 15px solid transparent;
        content: " ";
    }
    .DP-timeline > li > .DP-timeline-panel:after {
        position: absolute;
        top: 27px;
        right: -14px;
        display: inline-block;
        border-top: 14px solid transparent;
        border-left: 14px solid #fff;
        border-right: 0 solid #fff;
        border-bottom: 14px solid transparent;
        content: " ";
    }
    .DP-timeline > li > .DP-timeline-badge {
        color: #fff;
        width: 30px;
        height: 30px;
        line-height: 30px;
        font-size: 1.4em;
        text-align: center;
        position: absolute;
        top: 25px;
        left: 50%;
        margin-left: -15px;
        background-color: #999999;
        z-index: 100;
        border-top-right-radius: 50%;
        border-top-left-radius: 50%;
        border-bottom-right-radius: 50%;
        border-bottom-left-radius: 50%;
    }
    .DP-timeline > li.DP-timeline-inverted > .DP-timeline-panel {
        float: right;
    }
    .DP-timeline > li.DP-timeline-inverted > .DP-timeline-panel:before {
        border-left-width: 0;
        border-right-width: 15px;
        left: -15px;
        right: auto;
    }
    .DP-timeline > li.DP-timeline-inverted > .DP-timeline-panel:after {
        border-left-width: 0;
        border-right-width: 14px;
        left: -14px;
        right: auto;
    }
    .DP-timeline-badge.primary {
        background-color: #2e6da4 !important;
    }
    .DP-timeline-badge.success {
        background-color: #3f903f !important;
    }
    .DP-timeline-badge.warning {
        background-color: #f0ad4e !important;
    }
    .DP-timeline-badge.danger {
        background-color: #d9534f !important;
    }
    .DP-timeline-badge.info {
        background-color: #5bc0de !important;
    }
    .DP-timeline-title {
        margin-top: 0;
        color: inherit;
    }
    .DP-timeline-body > p,
    .DP-timeline-body > ul {
        margin-bottom: 0;
    }
    .DP-timeline-body > p + p {
        margin-top: 5px;
    }
    
    .DP-timeline2 {
        list-style-type: none;
        position: relative;
    }
    .DP-timeline2:before {
        content: ' ';
        background: #d4d9df;
        display: inline-block;
        position: absolute;
        left: 29px;
        width: 2px;
        height: 100%;
        z-index: 400;
    }
    .DP-timeline2 > li {
        margin: 20px 0;
        background-color: rgb(253, 254, 255);
        border: 1px solid #d4d4d4;
        border-radius: 12px;
        padding: 10px 20px;
        -webkit-box-shadow: 0 1px 6px rgb(0 0 0 / 18%);
        box-shadow: 0 1px 6px rgb(0 0 0 / 18%);
    }
    .DP-timeline2 > li:before {
        content: ' ';
        background: white;
        display: inline-block;
        position: absolute;
        border-radius: 50%;
        border: 3px solid #22c0e8;
        left: 20px;
        width: 20px;
        height: 20px;
        z-index: 400;
    }    
    
    /************** 사용예 ***************
         <ul class="DP-timeline">
            <li>
                <div class="DP-timeline-badge">
                    <i class="glyphicon glyphicon-check"></i>
                </div>
                <div class="DP-timeline-panel">
                    <div class="DP-timeline-heading">
                        <h4 class="DP-timeline-title">Mussum ipsum cacilds</h4>
                        <p><small class="text-muted"><i class="glyphicon glyphicon-time"></i> 11 hours ago via Twitter</small></p>
                    </div>
                    <div class="DP-timeline-body">
                        <p>asdfasdfsdaf<br/>sdfgsdfgsdfgsdf<br/>asdfasdfsad</p>
                    </div>
                </div>
            </li>
            <li class="DP-timeline-inverted">
                <div class="DP-timeline-badge warning">
                    <i class="glyphicon glyphicon-credit-card"></i>
                </div>
                <div class="DP-timeline-panel">
                    <div class="DP-timeline-heading">
                        <h4 class="DP-timeline-title">Mussum ipsum cacilds</h4>
                    </div>
                    <div class="DP-timeline-body">
                        <p>asdfasdfsdaf<br/>sdfgsdfgsdfgsdf<br/>asdfasdfsad</p>
                    </div>
                </div>
            </li>
        </ul>
        
        <ul class="DP-timeline2">
            <li>
                <span class="text-primary DP-fw-800">New Web Design</span>
                <span class="text-primary float-end">21 March, 2014</span>
                <p>asdfasdfsdaf<br/>sdfgsdfgsdfgsdf<br/>asdfasdfsad</p>
            </li>
            <li>
                <span class="text-primary DP-fw-800">New Web Design</span>
                <span class="text-primary float-end">21 March, 2014</span>
                <p>asdfasdfsdaf<br/>sdfgsdfgsdfgsdf<br/>asdfasdfsad</p>
            </li>
            <li>
                <span class="text-primary DP-fw-800">New Web Design</span>
                <span class="text-primary float-end">21 March, 2014</span>
                <p>asdfasdfsdaf<br/>sdfgsdfgsdfgsdf<br/>asdfasdfsad</p>
            </li>
        </ul>        
    *********************************/