@media screen and (width <=900px) {
    #Link_to_Postmain {
        overflow-x: scroll;
    }

}
@media screen and (width <=600px) {

    body {
        display: grid;
    }

    header {
        grid-column: 1;
        grid-row: 1;
    }

    nav {
        grid-column: 1;
        grid-row: 3;
        padding: 1;
    }

    article {
        grid-column: 1;
        grid-row: 2;
        
    }
    
    .withleft {
        margin-left: 1rem;
        max-width: 90vw;
    }

    footer {
        grid-column: 1;
        grid-row: 6;
    }
}