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

.main-timeline .timeline {
    width: calc(50% + 60px);
    padding: 20px 0 0 60px;
    margin: 0 5px 15px 0;
    float: right;
}

.main-timeline .timeline-content {
    color: #fff;
    background: #b19a5c;
    text-align: center;
    padding: 20px 20px 20px 85px;
    display: block;
    position: relative;
}

.main-timeline .timeline-content:hover {
    text-decoration: none;
}

.main-timeline .timeline-content:before {
    content: "";
    background: linear-gradient(to top left, transparent 50%, #81671f 52%);
    width: 60px;
    height: 20px;
    position: absolute;
    bottom: 0;
    left: 0;
}

.main-timeline .timeline-icon {
    font-size: 35px;
    line-height: 54px;
    width: 60px;
    height: 60px;
    border: 4px solid #fff;
    border-radius: 50%;
    transform: translateY(-50%);
    position: absolute;
    left: 80px;
    top: 50%;
}

.main-timeline .timeline-year {
    background: #d5bd7a;
    font-size: 35px;
    font-weight: 600;
    line-height: 110px;
    width: 120px;
    height: 100%;
    position: absolute;
    top: -20px;
    left: -60px;
}

.main-timeline .title {
    font-size: 17px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 7px 0;
}

.main-timeline .description {
    font-size: 15px;
    letter-spacing: 1px;
    margin: 0;
}

.main-timeline .timeline:nth-child(even) {
    padding: 20px 60px 0 0;
    float: left;
}

.main-timeline .timeline:nth-child(even) .timeline-content {
    padding: 20px 160px 20px 20px;
}

.main-timeline .timeline:nth-child(even) .timeline-content:before {
    transform: rotateY(180deg);
    left: auto;
    right: 0;
}

.main-timeline .timeline:nth-child(even) .timeline-year {
    right: -60px;
    left: auto;
}

.main-timeline .timeline:nth-child(even) .timeline-icon {
    left: auto;
    right: 80px;
}

.main-timeline .timeline:nth-child(4n+2) .timeline-content {
    background: #1862F7;
}

.main-timeline .timeline:nth-child(4n+2) .timeline-content:before {
    background: linear-gradient(to top left, transparent 50%, #012E95 52%);
}

.main-timeline .timeline:nth-child(4n+2) .timeline-year {
    background: #3473FF;
}

.main-timeline .timeline:nth-child(4n+3) .timeline-content {
    background: #22a009;
}

.main-timeline .timeline:nth-child(4n+3) .timeline-content:before {
    background: linear-gradient(to top left, transparent 50%, #123a0a 52%);
}

.main-timeline .timeline:nth-child(4n+3) .timeline-year {
    background: #28b50c;
}

.main-timeline .timeline:nth-child(4n+4) .timeline-content {
    background: #F61945;
}

.main-timeline .timeline:nth-child(4n+4) .timeline-content:before {
    background: linear-gradient(to top left, transparent 50%, #95001D 52%);
}

.main-timeline .timeline:nth-child(4n+4) .timeline-year {
    background: #FE3559;
}

@media screen and (max-width:990px) {
    .main-timeline .timeline {
        width: calc(50% + 120px);
    }
}

@media screen and (max-width:767px) {
    .main-timeline .timeline {
        width: 100%;
    }
}

@media screen and (max-width:576px) {

    .main-timeline .timeline,
    .main-timeline .timeline:nth-child(even) {
        text-align: center;
        padding: 30px 10px 0 0;
        margin: 0 0 30px;
    }

    .main-timeline .timeline-content,
    .main-timeline .timeline:nth-child(even) .timeline-content {
        padding: 70px 5px 10px;
    }

    .main-timeline .timeline-content:before,
    .main-timeline .timeline:nth-child(even) .timeline-content:before {
        width: 60px;
        transform: rotate(90deg);
        bottom: auto;
        top: 20px;
        left: -20px;
    }

    .main-timeline .timeline-year,
    .main-timeline .timeline:nth-child(even) .timeline-year {
        line-height: 80px;
        width: 100%;
        height: 80px;
        left: auto;
        right: -20px;
        top: -20px;
    }

    .main-timeline .timeline-icon,
    .main-timeline .timeline:nth-child(even) .timeline-icon {
        transform: translateX(-50%) translateY(0);
        top: 75px;
        left: 50%;
        right: auto;
    }

    .main-timeline .title {
        font-size: 15px;
    }
}