/* The actual timeline (the vertical ruler) */
.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

/* The actual timeline (the vertical ruler) */
.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: white;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

/* timeline-item around content */
.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

/* The circles on the timeline */
.timeline-item::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    right: -17px;
    background-color: white;
    border: 4px solid #297BFF;
    top: 18px;
    border-radius: 50%;
    z-index: 1;
}

/* Place the timeline-item to the timeline-item-left */
.timeline-item-left {
    left: 0;
}

/* Place the timeline-item to the timeline-item-right */
.timeline-item-right {
    left: 50%;
}

/* Add arrows to the timeline-item-left timeline-item (pointing right) */
.timeline-item-left::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 22px;
    width: 0;
    z-index: 1;
    right: 30px;
    border: medium solid white;
    border-width: 10px 0 10px 15px;
    border-color: transparent transparent transparent white;
}

/* Add arrows to the timeline-item-right timeline-item (pointing left) */
.timeline-item-right::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 22px;
    width: 0;
    z-index: 1;
    left: 30px;
    border: medium solid white;
    border-width: 10px 15px 10px 0;
    border-color: transparent white transparent transparent;
}

/* Fix the circle for timeline-items on the timeline-item-left side */
.timeline-item-left::after {
    right: -12.5px;
}

/* Fix the circle for timeline-items on the timeline-item-right side */
.timeline-item-right::after {
    left: -13px;
}

/* The actual timeline-content */
.timeline-content {
    padding: 20px 30px;
    background-color: white;
    position: relative;
    border-radius: 6px;
}

/* Media queries - Responsive timeline on screens less than 600px wide */
@media screen and (max-width: 600px) {
    /* Place the timelime to the left */
    .timeline::after {
        left: 31px;
    }

    /* Full-width timeline-items */
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    /* Make sure that all arrows are pointing leftwards */
    .timeline-item::before {
        left: 60px;
        border: medium solid white;
        border-width: 10px 15px 10px 0;
        border-color: transparent white transparent transparent;
    }

    /* Make sure all circles are at the same spot */
    .timeline-item-left::after, .timeline-item-right::after {
        left: 18px;
    }

    /* Make all timeline-item-right timeline-items behave like the timeline-item-left ones */
    .timeline-item-right {
        left: 0%;
    }
}