.main-timeline {
    font-family: tahoma;
    padding: 20px 0;
    position: relative;
}

    .main-timeline::before,
    .main-timeline::after {
        content: "";
        height: 40px;
        width: 40px;
        background-color: #e7e7e7;
        border-radius: 50%;
        border: 10px solid #303334;
        transform: translatex(-50%);
        position: absolute;
        left: 50%;
        top: -15px;
        z-index: 2;
    }

    .main-timeline::after {
        top: auto;
        bottom: 15px;
    }

    .main-timeline .timeline {
        padding: 35px 0;
        margin-top: -30px;
        position: relative;
        z-index: 1;
    }

        .main-timeline .timeline::before,
        .main-timeline .timeline::after {
            content: "";
            height: 100%;
            width: 50%;
            border-radius: 110px 0 0 110px;
            border: 15px solid #46b2bc;
            border-right: none;
            position: absolute;
            left: 0;
            top: 0;
            z-index: -1;
        }

        .main-timeline .timeline::after {
            height: calc(100% - 30px);
            width: calc(50% - 12px);
            border-color: #65c7d0;
            left: 12px;
            top: 15px;
        }

    .main-timeline .timeline-content {
        display: inline-block;
    }

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

    .main-timeline .timeline-year {
        color: #65c7d0;
        font-size: 50px;
        font-weight: 600;
        display: inline-block;
        transform: translatey(-50%);
        position: absolute;
        top: 50%;
        left: 10%;
    }

    .main-timeline .timeline-icon {
        color: #65c7d0;
        font-size: 70px;
        display: inline-block;
        transform: translateY(-50%);
        position: absolute;
        left: 34%;
        top: 50%;
    }

    .main-timeline .content {
        color: #909090;
        width: 50%;
        padding: 20px;
        display: inline-block;
        float: right;
    }

    .main-timeline .title {
        color: #65c7d0;
        font-size: 20px;
        font-weight: 600;
        text-transform: uppercase;
        margin: 0 0 5px 0;
    }

    .main-timeline .description {
        font-size: 16px;
        margin: 0;
    }

    .main-timeline .timeline:nth-child(even)::before {
        left: auto;
        right: 0;
        border-radius: 0 110px 110px 0;
        border: 15px solid red;
        border-left: none;
    }

    .main-timeline .timeline:nth-child(even)::after {
        left: auto;
        right: 12px;
        border-radius: 0 100px 100px 0;
        border: 15px solid green;
        border-left: none;
    }

    .main-timeline .timeline:nth-child(even) .content {
        float: left;
    }

    .main-timeline .timeline:nth-child(even) .timeline-year {
        left: auto;
        right: 10%;
    }

    .main-timeline .timeline:nth-child(even) .timeline-icon {
        left: auto;
        right: 32%;
    }

    .main-timeline .timeline:nth-child(5n+1)::before {
        border-color: #46b2bc;
    }

    .main-timeline .timeline:nth-child(5n+1)::after {
        border-color: #65c7d0;
    }

    .main-timeline .timeline:nth-child(5n+1) .timeline-icon {
        color: #65c7d0;
    }

    .main-timeline .timeline:nth-child(5n+1) .timeline-year {
        color: #65c7d0;
    }

    .main-timeline .timeline:nth-child(5n+1) .title {
        color: #65c7d0;
    }

    .main-timeline .timeline:nth-child(5n+2)::before {
        border-color: #ea3c14;
    }

    .main-timeline .timeline:nth-child(5n+2)::after {
        border-color: #EF5720;
    }

    .main-timeline .timeline:nth-child(5n+2) .timeline-icon {
        color: #EA3C14;
    }

    .main-timeline .timeline:nth-child(5n+2) .timeline-year {
        color: #EA3C14;
    }

    .main-timeline .timeline:nth-child(5n+2) .title {
        color: #EA3C14;
    }

    .main-timeline .timeline:nth-child(5n+3)::before {
        border-color: #8CC63E;
    }

    .main-timeline .timeline:nth-child(5n+3)::after {
        border-color: #6CAF29;
    }

    .main-timeline .timeline:nth-child(5n+3) .timeline-icon {
        color: #8CC63E;
    }

    .main-timeline .timeline:nth-child(5n+3) .timeline-year {
        color: #8CC63E;
    }

    .main-timeline .timeline:nth-child(5n+3) .title {
        color: #8CC63E;
    }

    .main-timeline .timeline:nth-child(5n+4)::before {
        border-color: #F99324;
    }

    .main-timeline .timeline:nth-child(5n+4)::after {
        border-color: #FBB03B;
    }

    .main-timeline .timeline:nth-child(5n+4) .timeline-icon {
        color: #F99324;
    }

    .main-timeline .timeline:nth-child(5n+4) .timeline-year {
        color: #F99324;
    }

    .main-timeline .timeline:nth-child(5n+4) .title {
        color: #F99324;
    }

    .main-timeline .timeline:nth-child(5n+5)::before {
        border-color: #0071BD;
    }

    .main-timeline .timeline:nth-child(5n+5)::after {
        border-color: #0050A3;
    }

    .main-timeline .timeline:nth-child(5n+5) .timeline-icon {
        color: #0071BD;
    }

    .main-timeline .timeline:nth-child(5n+5) .timeline-year {
        color: #0071BD;
    }

    .main-timeline .timeline:nth-child(5n+5) .title {
        color: #0071BD;
    }

@media screen and (max-width:1200px) {
    .main-timeline .timeline:after {
        border-radius: 88px 0 0 88px;
    }

    .main-timeline .timeline:nth-child(even):after {
        border-radius: 0 88px 88px 0;
    }
}

@media screen and (max-width:767px) {
    .main-timeline .timeline {
        margin-top: -19px;
    }

        .main-timeline .timeline:before {
            border-radius: 50px 0 0 50px;
            border-width: 10px;
        }

        .main-timeline .timeline:after {
            height: calc(100% - 18px);
            width: calc(50% - 9px);
            border-radius: 43px 0 0 43px;
            border-width: 10px;
            top: 9px;
            left: 9px;
        }

        .main-timeline .timeline:nth-child(even):before {
            border-radius: 0 50px 50px 0;
            border-width: 10px;
        }

        .main-timeline .timeline:nth-child(even):after {
            height: calc(100% - 18px);
            width: calc(50% - 9px);
            border-radius: 0 43px 43px 0;
            border-width: 10px;
            top: 9px;
            right: 9px;
        }

    .main-timeline .timeline-icon {
        font-size: 60px;
    }

    .main-timeline .timeline-year {
        font-size: 40px;
    }
}

@media screen and (max-width:479px) {
    .main-timeline .timeline-icon {
        font-size: 50px;
        transform: translateY(0);
        top: 25%;
        left: 10%;
    }

    .main-timeline .timeline-year {
        font-size: 25px;
        transform: translateY(0);
        top: 65%;
        left: 9%;
    }

    .main-timeline .content {
        width: 68%;
        padding: 10px;
    }

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

    .main-timeline .timeline:nth-child(even) .timeline-icon {
        right: 10%;
    }

    .main-timeline .timeline:nth-child(even) .timeline-year {
        right: 9%;
    }
}