.history-line{
    position: relative;
    padding: 50px 0 50px 30px;
}
.history-line::before{
    content: "";
    width: 5px;
    height: 100%;
    position: absolute;
    top: 0;
    left: 70px;
    z-index: -1;
    background: #31be77;
}
.history-line .year{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 30px;
}
.history-line .year div:nth-child(1){
    width: 10%;
    min-width: 85px;
    background: #0681be;
    padding: 10px;
    text-align: center;
    color: #FFFFFF;
    font-size: 20px;
    font-weight: 600;
    border-radius: 10px;
    height: 50px;
}
.history-line .year div:nth-child(2){
    width: 85%;
    
}
@media screen and (max-width: 768px) {
    .history-line .year{
        justify-content: flex-start;
    }
    .history-line .year div:nth-child(2){
        width: 70%;
    }
    .history-line .year div:nth-child(1){
        margin-right: 30px;
    }
}
@media screen and (max-width: 480px) {
    .history-line{
        padding: 30px 0 30px 0px;
    }
    
    .history-line .year div:nth-child(2){
        width: 100%;
        text-align: center;
    }
    .history-line .year div:nth-child(1){
        margin-right: 0px;
        width: 100%;
        margin-bottom: 20px;
    }
    .history-line::before{
        display: none;
    }
}