timeline style : demo 173

CSS

(Fonts required: Poppins.)
                    .main-timeline{ font-family: 'Poppins', sans-serif; }
                    .main-timeline:after{
                        content: '';
                        display: block;
                        clear: both;
                    }
                    .main-timeline .timeline{
                        width: calc(50% + 1px);
                        margin: 0 0 15px;
                        float: left;
                    }
                    .main-timeline .timeline-content{
                        color: #07ABFC;
                        text-align: center;
                        padding: 20px 50px 20px 20px;
                        display: block;
                        position: relative;
                    }
                    .main-timeline .timeline-content:hover{ text-decoration: none; }
                    .main-timeline .timeline-content:before,
                    .main-timeline .timeline-content:after{
                        content: '';
                        height: 100%;
                        width: 100%;
                        border: 3px solid #07ABFC;
                        position: absolute;
                        right: 0;
                        bottom: 0;
                        clip-path: polygon(40% 0, 100% 0, 100% 100%, 60% 100%);
                    }
                    .main-timeline .timeline-content:after{
                        right: auto;
                        left: 0;
                        height: 90%;
                        width: 30px;
                        border-top: none;
                        border-right: none;
                        clip-path: none;
                    }
                    .main-timeline .timeline-icon{
                        color: #fff;
                        background: #07ABFC;
                        font-size: 45px;
                        text-align: center;
                        line-height: 70px;
                        width: 90px;
                        height: 90px;
                        border: 10px solid #fff;
                        transform: translateY(-50%);
                        position: absolute;
                        top: 50%;
                        right: -45px;
                        z-index: 1;
                    }
                    .main-timeline .title{
                        font-size: 22px;
                        font-weight: 600;
                        text-transform: uppercase;
                        margin: 0 0 12px;
                    }
                    .main-timeline .description{
                        font-size: 15px;
                        letter-spacing: 1px;
                        margin: 0 0 5px;
                    }
                    .main-timeline .timeline:nth-child(even){ float: right; }
                    .main-timeline .timeline:nth-child(even) .timeline-content{ padding: 20px 20px 20px 50px; }
                    .main-timeline .timeline:nth-child(even) .timeline-content:before{ transform: rotateY(180deg); }
                    .main-timeline .timeline:nth-child(even) .timeline-content:after{
                        left: auto;
                        right: 0;
                        transform: rotateY(180deg);
                    }
                    .main-timeline .timeline:nth-child(even) .timeline-icon{
                        right: auto;
                        left: -45px;
                    }
                    .main-timeline .timeline:nth-child(4n+2) .timeline-content{ color: #F67409; }
                    .main-timeline .timeline:nth-child(4n+2) .timeline-content:before,
                    .main-timeline .timeline:nth-child(4n+2) .timeline-content:after{
                        border-color: #F67409;
                    }
                    .main-timeline .timeline:nth-child(4n+2) .timeline-icon{ background: #F67409; }
                    .main-timeline .timeline:nth-child(4n+3) .timeline-content{ color: #d6063a; }
                    .main-timeline .timeline:nth-child(4n+3) .timeline-content:before,
                    .main-timeline .timeline:nth-child(4n+3) .timeline-content:after{
                        border-color: #d6063a;
                    }
                    .main-timeline .timeline:nth-child(4n+3) .timeline-icon{ background: #d6063a; }
                    .main-timeline .timeline:nth-child(4n+4) .timeline-content{ color: #011A66; }
                    .main-timeline .timeline:nth-child(4n+4) .timeline-content:before,
                    .main-timeline .timeline:nth-child(4n+4) .timeline-content:after{
                        border-color: #011A66;
                    }
                    .main-timeline .timeline:nth-child(4n+4) .timeline-icon{ background: #011A66; }
                    @media screen and (max-width:767px){
                        .main-timeline .timeline,
                        .main-timeline .timeline:nth-child(even){
                            width: 100%;
                            padding-top: 45px;
                            margin: 0 0 40px;
                        }
                        .main-timeline .timeline-content,
                        .main-timeline .timeline:nth-child(even) .timeline-content{
                            padding: 60px 20px 20px;
                        }
                        .main-timeline .timeline-icon,
                        .main-timeline .timeline:nth-child(even) .timeline-icon{
                            transform: translateX(-50%);
                            top: -45px;
                            left: 50%;
                            right: auto;
                        }
                    }
                    
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