@media (max-width:700px) {
    .title{font-size: 20px;}
    .founders .about-founder ul li{font-size: 11px;}
    .banner .jumbotron {background: linear-gradient(2700deg,rgb(0, 0, 0) 70%,rgb(255, 255, 255) 100%) !important;}   
}

@media (max-width: 991.98px) { 
    .title{font-size: 36px;}
 }