:root{ --main-color: #00C3E6; }

.demo{ background-color: #eee; }

.main-timeline{ font-family: 'Poppins', sans-serif; }

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

.main-timeline .timeline{
    width: 50.1%;
    padding: 15px;
    margin: 0 5px 15px 0;
    float: left;
}

.main-timeline .timeline-content{
    color: var(--main-color);
    background-color: #fff;
    text-align: center;
    padding: 35px 70px 35px 35px;
    box-shadow: 0 0 15px -3px rgba(0,0,0,0.3);
    border-radius: 30px;
    display: block;
    position: relative;
}

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

.main-timeline .timeline-content:before,
.main-timeline .timeline-content:after{
    content: '';
    border: 2px solid var(--main-color);
    border-radius: 25px;
    position: absolute;
    left: 15px;
    top: 15px;
    bottom: 15px;
    right: 15px;
}

.main-timeline .timeline-content:after{
    border-style: dashed;
    border-color: #999;
    border-radius: 30px;
    left: -15px;
    top: -15px;
    bottom: -15px;
    right: -15px;
}

.main-timeline .timeline-icon{
    color: #fff;
    background: var(--main-color);
    font-size: 35px;
    text-align: center;
    line-height: 80px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    transform: translateY(-50%);
    position: absolute;
    top: 50%;
    right: -25px;
    z-index: 1;
}

.main-timeline .title{
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin: 0 0 5px;
}

.main-timeline .description{
    color: #777;
    font-size: 13px;
    letter-spacing: 2px;
    line-height: 20px;
    margin: 0;
}

.main-timeline .timeline:nth-child(even){
    margin: 0 0 15px 5px;
    float: right;
}

.main-timeline .timeline:nth-child(even) .timeline-content{
    padding: 35px 35px 35px 70px;
}

.main-timeline .timeline:nth-child(even) .timeline-icon{
    left: -25px;
    right: auto;
}

.main-timeline .timeline:nth-child(4n+2){ --main-color: #FEAC02; }

.main-timeline .timeline:nth-child(4n+3){ --main-color: #FF3754; }

.main-timeline .timeline:nth-child(4n+4){ --main-color: #4a3bd1; }

@media screen and (max-width:767px){
    .main-timeline .timeline,
    .main-timeline .timeline:nth-child(even){
        width: calc(100% - 5px);
    }
}

@media screen and (max-width:479px){
    .main-timeline .timeline,
    .main-timeline .timeline:nth-child(even){
        width: 100%;
        padding: 15px;
        margin: 0 0 30px;
    }

    .main-timeline .timeline-content,
    .main-timeline .timeline:nth-child(even) .timeline-content{
        text-align: center;
        padding: 70px 35px 35px;
    }

    .main-timeline .timeline-icon, 
    .main-timeline .timeline:nth-child(even) .timeline-icon{
        line-height: 80px;
        height: 80px;
        width: 80px;
        transform: translateY(0) translateX(50%);
        top: -25PX;
        right: 50%;
        left: auto;
    }
}