.main-timeline {
    width: 80%;
    margin: 20px auto;
    position: relative;
}

    .main-timeline:before {
        content: "";
        display: block;
        width: 2px;
        height: 100%;
        background: rgba(255,255,255,0.2);
        margin: 0 0 0 -1px;
        position: absolute;
        top: 0;
        left: 50%;
    }

    .main-timeline .timeline {
        width: 100%;
        margin-bottom: 20px;
        position: relative;
    }

        .main-timeline .timeline:after {
            content: "";
            display: block;
            clear: both;
        }

    .main-timeline .timeline-content {
        width: 40%;
        float: left;
        margin: 5px 0 0 0;
        border-radius: 6px;
    }

    .main-timeline .date {
        display: block;
        width: 70px;
        height: 70px;
        border-radius: 50%;
        background: #25303b;
        padding: 5px 0;
        margin: 0 0 0 -36px;
        position: absolute;
        top: 0;
        left: 50%;
        font-size: 12px;
        font-weight: 900;
        text-transform: uppercase;
        color: rgba(255,255,255,0.5);
        border: 2px solid rgba(255,255,255,0.2);
        box-shadow: 0 0 0 7px #25303b;
    }

        .main-timeline .date span {
            display: block;
            text-align: center;
        }

    .main-timeline .day,
    .main-timeline .year {
        font-size: 10px;
    }

    .main-timeline .month {
        font-size: 18px;
    }

    .main-timeline .title {
        padding: 15px;
        margin: 0;
        font-size: 20px;
        color: #fff;
        text-transform: uppercase;
        letter-spacing: -1px;
        border-radius: 6px 6px 0 0;
        position: relative;
    }

        .main-timeline .title:after {
            content: "";
            width: 10px;
            height: 10px;
            position: absolute;
            top: 20px;
            right: -5px;
            transform: rotate(-45deg);
        }

    .main-timeline .description {
        padding: 15px;
        margin: 0;
        font-size: 14px;
        color: #656565;
        background: #fff;
        border-radius: 0 0 6px 6px;
    }

    .main-timeline .timeline:nth-child(2n+2) .timeline-content {
        float: right;
    }

    .main-timeline .timeline:nth-child(2n+2) .title:after {
        left: -5px;
    }

    .main-timeline .timeline:nth-child(2n+2) .title,
    .main-timeline .timeline:nth-child(2n+2) .title:after {
        background: #58b25e;
    }

    .main-timeline .timeline:nth-child(2n+1) .title,
    .main-timeline .timeline:nth-child(2n+1) .title:after {
        background: #02a2dd;
    }

@media only screen and (max-width: 990px) {
    .main-timeline {
        width: 100%;
    }
}

@media only screen and (max-width: 767px) {
    .main-timeline:before,
    .main-timeline .date {
        left: 6%;
    }

    .main-timeline .timeline-content {
        width: 85%;
        float: right;
    }

    .main-timeline .title:after {
        left: -5px;
    }
}

@media only screen and (max-width: 480px) {
    .main-timeline:before,
    .main-timeline .date {
        left: 12%;
    }

    .main-timeline .timeline-content {
        width: 75%;
    }

    .main-timeline .date {
        width: 60px;
        height: 60px;
        margin-left: -30px;
    }

    .main-timeline .month {
        font-size: 14px;
    }
}