div{
    background-color: brown;
    height: 500px;
    width: 500px;
}

@media screen and (max-width: 400px){
    div{
        background-color: green;
        margin: 5rem;
    }
}

@media print{
    div{
        font-size: 50px;
        font-family: monospace;
    }
    #especial{
        display: none;
    }
}