@media (max-width: 991px) {
    .five-boxes .box {
        flex: 1 1 33.333%; 
        border-bottom: 1px solid #c5c5c5;
    }
    .five-boxes .box:nth-child(3n) {
        border-right: none;
    }
    .five-boxes .box:nth-last-child(-n+2) {
        border-bottom: none;
    }

    .about-section{
       margin-top:30% ; 
    }



}