.timeline {
    position: relative;
    padding: 21px 0px 10px;
    margin-top: 4px;
    margin-bottom: 30px;
}

    .timeline .line {
        position: absolute;
        width: 4px;
        display: block;
        background: currentColor;
        top: 0px;
        bottom: 0px;
        margin-left: 30px;
    }

    .timeline .separator {
        border-top: 1px solid currentColor;
        padding: 5px;
        padding-left: 40px;
        font-style: italic;
        font-size: .9em;
        margin-left: 30px;
    }

    .timeline .line::before {
        top: -4px;
    }

    .timeline .line::after {
        bottom: -4px;
    }

    .timeline .line::before,
    .timeline .line::after {
        content: '';
        position: absolute;
        left: -4px;
        width: 12px;
        height: 12px;
        display: block;
        border-radius: 50%;
        background: currentColor;
    }

    .timeline .panel {
        position: relative;
        margin: 10px 0px 21px 70px;
        clear: both;
    }

        .timeline .panel::before {
            position: absolute;
            display: block;
            top: 8px;
            left: -24px;
            content: '';
            width: 0px;
            height: 0px;
            border: inherit;
            border-width: 12px;
            border-top-color: transparent;
            border-bottom-color: transparent;
            border-left-color: transparent;
        }

        .timeline .panel .panel-heading.icon * {
            font-size: 20px;
            vertical-align: middle;
            line-height: 40px;
        }

        .timeline .panel .panel-heading.icon {
            position: absolute;
            left: -59px;
            display: block;
            width: 40px;
            height: 40px;
            padding: 0px;
            border-radius: 50%;
            text-align: center;
            float: left;
        }

    .timeline .panel-outline {
        border-color: transparent;
        background: transparent;
        box-shadow: none;
    }

        .timeline .panel-outline .panel-body {
            padding: 10px 0px;
        }

        .timeline .panel-outline .panel-heading:not(.icon),
        .timeline .panel-outline .panel-footer {
            display: none;
        }