timeline style : demo 165

CSS

(Fonts required: Poppins.)
                    .main-timeline{
                        font-family: 'Poppins', sans-serif; 
                        padding: 25px 0;
                    }
                    .main-timeline:after{
                        content: '';
                        display: block;
                        clear: both;
                    }
                    .main-timeline:before{
                        content: '';
                        background: linear-gradient(to right,#777 50%,#999 65%);
                        height: 100%;
                        width: 25px;
                        transform: translateX(-50%);
                        position: absolute;
                        left: 50%;
                        top: 0;
                    }
                    .main-timeline .timeline{
                        width: calc(50% + 63px);
                        margin: 0 0 30px;
                        float: right;
                        position: relative;
                    }
                    .main-timeline .timeline-content{
                        color: #666;
                        background: linear-gradient(to left,#FF7F23 65%,#DF2947);
                        text-align: center;
                        min-height: 120px;
                        padding: 20px 30px 20px 160px;
                        border-radius: 100px;
                        display: block; 
                        position: relative;
                        z-index: 1;
                    }
                    .main-timeline .timeline-content:hover{ text-decoration: none; }
                    .main-timeline .timeline-content:before{
                        content: '';
                        background: #fff;
                        border-radius: 100px 0 0 100px;
                        position: absolute;
                        left: 130px;
                        top: 0;
                        bottom: 0;
                        right: 0;
                        z-index: -1;
                    }
                    .main-timeline .timeline-icon{
                        color: #DF2947;
                        font-size: 45px;
                        line-height: 100px;
                        width: 100px;
                        height: 100px;
                        border-radius: 50%;
                        box-shadow: -3px 3px 7px rgba(0,0,0,0.3);
                        transform: translateY(-50%);
                        position: absolute;
                        left: 15px;
                        top: 50%;
                    }
                    .main-timeline .timeline-icon:before{
                        content: '';
                        background-color: #fff;
                        border-radius: inherit;
                        box-shadow: inherit;
                        position: absolute;
                        left: 10px;
                        top: 10px;
                        bottom: 10px;
                        right: 10px;
                        z-index: -1;
                    }
                    .main-timeline .title{
                        color: #DF2947;
                        font-size: 20px;
                        font-weight: 600;
                        letter-spacing: 1px;
                        text-transform: uppercase;
                        margin: 0 0 5px;
                    }
                    .main-timeline .description{
                        font-size: 13px;
                        letter-spacing: 1px;
                        line-height: 20px;
                        margin: 0;
                    }
                    .main-timeline .timeline:nth-child(even){ float: left; }
                    .main-timeline .timeline:nth-child(even) .timeline-content{ padding: 20px 160px 20px 30px; }
                    .main-timeline .timeline:nth-child(even) .timeline-content:before{
                        border-radius: 0 100px 100px 0;
                        left: 0;
                        right: 130px;
                    }
                    .main-timeline .timeline:nth-child(even) .timeline-icon{
                        left: auto;
                        right: 15px;
                    }
                    .main-timeline .timeline:nth-child(4n+2) .timeline-content{
                        background: linear-gradient(to right,#FDCC49 65%,#f74e00);
                    }
                    .main-timeline .timeline:nth-child(4n+2) .timeline-icon,
                    .main-timeline .timeline:nth-child(4n+2) .title{
                        color: #f74e00;
                    }
                    .main-timeline .timeline:nth-child(4n+3) .timeline-content{
                        background: linear-gradient(to left,#7EE6FC 65%,#378AE6);
                    }
                    .main-timeline .timeline:nth-child(4n+3) .timeline-icon,
                    .main-timeline .timeline:nth-child(4n+3) .title{
                        color: #378AE6;
                    }
                    .main-timeline .timeline:nth-child(4n+4) .timeline-content{
                        background: linear-gradient(to right,#AA84F1 65%,#4F29B0);
                    }
                    .main-timeline .timeline:nth-child(4n+4) .timeline-icon,
                    .main-timeline .timeline:nth-child(4n+4) .title{
                        color: #4F29B0;
                    }
                    @media screen and (max-width:767px){
                        .main-timeline:before{ display: none; }
                        .main-timeline .timeline{ width: 100%; } 
                    }
                    @media screen and (max-width:576px){
                        .main-timeline .timeline-content,
                        .main-timeline .timeline:nth-child(even) .timeline-content{
                            padding: 145px 20px 20px;
                            border-radius: 50px;
                        }
                        .main-timeline .timeline-content:before,
                        .main-timeline .timeline:nth-child(even) .timeline-content:before{
                            top: 125px;
                            right: 0;
                            left: 0;
                            border-radius: inherit;
                        }
                        .main-timeline .timeline-icon,
                        .main-timeline .timeline:nth-child(even) .timeline-icon{
                            transform: translateY(0) translateX(-50%);
                            left: 50%;
                            top: 10px;
                            right: auto;
                        }
                    }
                    
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