#SectionForViewPortNotSupport{
    display: none;
}

@media (min-width: 2000px) {
    #SectionForViewPortNotSupport{
        display: block;
        width: 100%;
        height: 101vh;
        text-align: center;
        background-color: black;
        position: fixed;
        z-index: 2;
        overflow-x:hidden; 
        overflow-y:hidden;
    }

    #SectionForViewPortNotSupport p{
        padding-top: 50vh;
        color: white;
        font-weight: bold;
        font-size: 1.4rem;
    }

    #main_content{
        display: none;
    }
}