Template:Timeline/styles.css

.timeline-container {
    position: relative;
}

.main-timeline-section {
    position: relative;
    width: 100%;
    margin: auto;
}

.main-timeline-section .timeline-start,
.main-timeline-section .timeline-end {
    position: absolute;
    background: #c8ccd1;
    border: 3px solid #FFF;
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    z-index: 10;
}

.main-timeline-section .timeline-end {
    right: 0;
}

.main-timeline-section .conference-center-line {
    position: absolute;
    width: 100%;
    height: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: #c8ccd1;
}

.timeline-article {
    width: 100%;
    position: relative;
    min-height: 300px;
}

.timeline-article .meta-date {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #c8ccd1;
    border: 3px solid #FFF;
}

.timeline-article .content-box {
    border: 3px solid #c8ccd1;
    border-radius: 5px;
    background-color: #FFF;
    width: 180px;
    position: absolute;
    top: 60%;
    left: -80px;
    padding: 10px;
    color: #1F1F1F;
    text-align: center;
}

.timeline-article-top .content-box:before,
.timeline-article-bottom .content-box:before {
    border-bottom-color: #c8ccd1;
    border-top-color: #c8ccd1;
}