/* The actual timeline (the vertical ruler) */
.main-timeline {
    position: relative;
}

    /* The actual timeline (the vertical ruler) */
    .main-timeline::after {
        content: "";
        position: absolute;
        width: 6px;
        background-color: #939597;
        top: 0;
        bottom: 0;
        left: 50%;
        margin-left: -3px;
    }

/* Container around content */
.timeline {
    position: relative;
    background-color: inherit;
    width: 50%;
}

    /* The circles on the timeline */
    .timeline::after {
        content: "";
        position: absolute;
        width: 25px;
        height: 25px;
        right: -13px;
        background-color: #939597;
        border: 5px solid #f5df4d;
        top: 15px;
        border-radius: 50%;
        z-index: 1;
    }

/* Place the container to the left */
.left {
    padding: 0px 40px 20px 0px;
    left: 0;
}

/* Place the container to the right */
.right {
    padding: 0px 0px 20px 40px;
    left: 50%;
}

/* Add arrows to the left container (pointing right) */
.left::before {
    content: " ";
    position: absolute;
    top: 18px;
    z-index: 1;
    right: 30px;
    border: medium solid white;
    border-width: 10px 0 10px 10px;
    border-color: transparent transparent transparent white;
}

/* Add arrows to the right container (pointing left) */
.right::before {
    content: " ";
    position: absolute;
    top: 18px;
    z-index: 1;
    left: 30px;
    border: medium solid white;
    border-width: 10px 10px 10px 0;
    border-color: transparent white transparent transparent;
}

/* Fix the circle for containers on the right side */
.right::after {
    left: -12px;
}

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

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

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

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

    .left::before {
        right: auto;
    }

    /* Make all right containers behave like the left ones */
    .right {
        left: 0%;
    }
}