/* Large devices (laptops/desktops, 1024px and up) */
@media only screen and (max-width: 1024px) {
    .jumbotron h1{
        font-size: 16ch;
    }    
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (max-width: 768px) {
    .jumbotron h1{
        font-size: 14ch;
    }

    .sec-aboutus h1 {
        font-size: 5ch;
    }

    .sec-aboutus h4 {
        font-size: 2ch;
    }

    .sec-aboutus h3 {
        font-size: 2ch;
    }
}

/* Extra small devices (phones, 426px and down) */
@media only screen and (max-width: 426px) {
    .jumbotron h1{
        font-size: 6ch;
    }

    .jumbotron h4{
        font-size: 2ch;
        padding-top: 3rem;
    }
}