<style>
                        .demo{ background: #d6d7db; }
                        .main-timeline{
                            overflow: hidden;
                            position: relative;
                        }
                        .main-timeline:before{
                            content: "";
                            width: 5px;
                            height: 100%;
                            background: #949599;
                            position: absolute;
                            top: 0;
                            left: 50%;
                            transform: translateX(-50%);
                        }
                        .main-timeline .timeline{
                            width: 50%;
                            float: left;
                            position: relative;
                        }
                        .main-timeline .timeline:before,
                        .main-timeline .timeline:after{
                            content: "";
                            display: block;
                            width: 100%;
                            clear: both;
                        }
                        .main-timeline .timeline:before{
                            content: "";
                            width: 45%;
                            height: 5px;
                            background: #949599;
                            position: absolute;
                            top: 50%;
                            left: 0;
                            transform: translateY(-50%);
                        }
                        .main-timeline .icon{
                            display: block;
                            width: 140px;
                            height: 140px;
                            line-height: 140px;
                            border-radius: 50%;
                            background: #fff;
                            border: 5px solid #949599;
                            position: absolute;
                            top: 50%;
                            left: 0;
                            transform: translateY(-50%);
                        }
                        .main-timeline .icon i{
                            width: 120px;
                            height: 120px;
                            line-height: 120px;
                            border-radius: 50%;
                            background: #bcd45a;
                            margin: auto;
                            font-size: 60px;
                            font-weight: bold;
                            color: #fff;
                            text-align: center;
                            position: absolute;
                            top: 0;
                            left: 0;
                            bottom: 0;
                            right: 0;
                        }
                        .main-timeline .timeline-content{
                            width: 65%;
                            float: right;
                            padding: 10px;
                            margin-right: 20px;
                            background: #fff;
                            border: 5px solid #949599;
                            text-align: center;
                            position: relative;
                        }
                        .main-timeline .timeline-content:before,
                        .main-timeline .timeline-content:after{
                            content: "";
                            border-left: 20px solid #949599;
                            border-top: 20px solid transparent;
                            border-bottom: 20px solid transparent;
                            position: absolute;
                            top: 50%;
                            right: -25px;
                            transform: translateY(-50%);
                        }
                        .main-timeline .timeline-content:after{
                            border-left-color: #fff;
                            right: -18px;
                        }
                        .main-timeline .content-inner{
                            padding: 10px 10px 10px 25%;
                            background: #bcd45a;
                            position: relative;
                        }
                        .main-timeline .content-inner:before{
                            content: "";
                            border-left: 15px solid #bcd45a;
                            border-top: 15px solid transparent;
                            border-bottom: 15px solid transparent;
                            position: absolute;
                            top: 50%;
                            right: -15px;
                            transform: translateY(-50%);
                            z-index: 1;
                        }
                        .main-timeline .year{
                            display: block;
                            width: 20%;
                            height: 100%;
                            background: #3d4a0b;
                            position: absolute;
                            top: 0;
                            left: 0;
                        }
                        .main-timeline .year span{
                            display: block;
                            font-size: 34px;
                            font-weight: bold;
                            color: #fff;
                            position: absolute;
                            top: 40%;
                            left: 0;
                            right: 0;
                            transform: rotate(-90deg);
                        }
                        .main-timeline .title{
                            font-size: 20px;
                            font-weight: bold;
                            color: #14231c;
                            margin: 0 0 5px 0;
                        }
                        .main-timeline .description{
                            font-size: 16px;
                            color: #14231c;
                            margin: 0;
                        }
                        .main-timeline .timeline:nth-child(2n):before,
                        .main-timeline .timeline:nth-child(2n) .icon,
                        .main-timeline .timeline:nth-child(2n) .year{
                            left: auto;
                            right: 0;
                        }
                        .main-timeline .timeline:nth-child(2n) .timeline-content{
                            float: left;
                            margin: 0 0 0 20px;
                        }
                        .main-timeline .timeline:nth-child(2n) .timeline-content:before,
                        .main-timeline .timeline:nth-child(2n) .timeline-content:after,
                        .main-timeline .timeline:nth-child(2n) .content-inner:before{
                            border-left: none;
                            border-right: 20px solid #949599;
                            right: auto;
                            left: -25px;
                        }
                        .main-timeline .timeline:nth-child(2n) .timeline-content:after{
                            border-right-color: #fff;
                            left: -18px;
                        }
                        .main-timeline .timeline:nth-child(2n) .content-inner{ padding: 10px 25% 10px 10px; }
                        .main-timeline .timeline:nth-child(2n) .content-inner:before{
                            border-right: 15px solid #bcd45a;
                            left: -15px;
                        }
                        .main-timeline .timeline:nth-child(2){ margin-top: 110px; }
                        .main-timeline .timeline:nth-child(odd){ margin: -150px 0 0 0; }
                        .main-timeline .timeline:nth-child(even){ margin-bottom: 70px; }
                        .main-timeline .timeline:first-child,
                        .main-timeline .timeline:last-child:nth-child(even){ margin: 0; }
                        .main-timeline .timeline:nth-child(2n) .icon i,
                        .main-timeline .timeline:nth-child(2n) .content-inner{ background: #7895cd; }
                        .main-timeline .timeline:nth-child(2n) .content-inner:before{ border-right-color: #7895cd; }
                        .main-timeline .timeline:nth-child(2n) .year{ background: #5e7fb4; }
                        .main-timeline .timeline:nth-child(3n) .icon i,
                        .main-timeline .timeline:nth-child(3n) .content-inner{ background: #c656a0; }
                        .main-timeline .timeline:nth-child(3n) .content-inner:before{ border-left-color: #c656a0; }
                        .main-timeline .timeline:nth-child(3n) .year{ background: #b44b90; }
                        .main-timeline .timeline:nth-child(4n) .icon i,
                        .main-timeline .timeline:nth-child(4n) .content-inner{ background: #e2aa6f; }
                        .main-timeline .timeline:nth-child(4n) .content-inner:before{ border-right-color: #e2aa6f; }
                        .main-timeline .timeline:nth-child(4n) .year{ background: #ca9666; }
                        @media only screen and (max-width: 1200px){
                            .main-timeline .icon{
                                width: 110px;
                                height: 110px;
                                line-height: 110px;
                            }
                            .main-timeline .icon i{
                                width: 90px;
                                height: 90px;
                                line-height: 90px;
                                font-size: 50px;
                            }
                        }
                        @media only screen and (max-width: 990px) and (min-width: 768px){
                            .main-timeline .icon{
                                width: 90px;
                                height: 90px;
                                line-height: 90px;
                            }
                            .main-timeline .icon i{
                                width: 70px;
                                height: 70px;
                                line-height: 70px;
                                font-size: 40px;
                            }
                            .main-timeline .year span{ top: 50%; }
                        }
                        @media only screen and (max-width: 767px){
                            .main-timeline:before,
                            .main-timeline .timeline:before{ display: none; }
                            .main-timeline .timeline,
                            .main-timeline .timeline:nth-child(even),
                            .main-timeline .timeline:nth-child(odd){
                                width: 100%;
                                float: none;
                                margin: 0 0 10px 0;
                            }
                            .main-timeline .timeline:last-child{ margin: 0; }
                            .main-timeline .icon{
                                margin: 0 auto 20px;
                                position: relative;
                                transform: translateY(0);
                            }
                            .main-timeline .timeline-content,
                            .main-timeline .timeline:nth-child(2n) .timeline-content{
                                width: 100%;
                                float: none;
                                margin: 0;
                            }
                            .main-timeline .timeline-content:before,
                            .main-timeline .timeline-content:after,
                            .main-timeline .timeline:nth-child(2n) .timeline-content:before,
                            .main-timeline .timeline:nth-child(2n) .timeline-content:after{
                                border-bottom: 20px solid #949599;
                                border-left: 20px solid transparent;
                                border-right: 20px solid transparent;
                                margin-right: -40px;
                                top: -40px;
                                right: 50%;
                                left: auto;
                                transform: translateX(-50%);
                            }
                            .main-timeline .timeline-content:after,
                            .main-timeline .timeline:nth-child(2n) .timeline-content:after{
                                border-bottom-color: #fff;
                                top: -33px;
                            }
                            .main-timeline .content-inner,
                            .main-timeline .timeline:nth-child(2n) .content-inner{ padding: 0 0 20px 0; }
                            .main-timeline .content-inner:before,
                            .main-timeline .timeline:nth-child(2n) .content-inner:before,
                            .main-timeline .timeline:nth-child(3n) .content-inner:before{
                                border-bottom: 15px solid #949b79;
                                border-left: 15px solid transparent;
                                border-right: 15px solid transparent;
                                margin-right: -30px;
                                top: -30px;
                                right: 50%;
                                left: auto;
                                transform: translateX(-50%);
                            }
                            .main-timeline .year{
                                width: 100%;
                                margin-bottom: 10px;
                                position: relative;
                            }
                            .main-timeline .year span{
                                transform: rotate(0);
                                position: relative;
                            }
                            .main-timeline .description{ padding: 0 10px; }
                            .main-timeline .timeline:nth-child(2n) .content-inner:before{ border-bottom-color: #5e7fb4; }
                            .main-timeline .timeline:nth-child(3n) .content-inner:before{ border-bottom-color: #b44b90; }
                            .main-timeline .timeline:nth-child(4n) .content-inner:before{ border-bottom-color: #cb9968; }
                        }
						</style>