

* {
    margin: 0;
    padding: 0;
}

nav {
    background-color: black;
    color: white;
    padding: 20px;
    text-align: center;
}

section {
    display: grid;
    grid-template-columns: auto;
}

article {
    background-color: lightgray;
    padding: 20px;
    text-align: center;
    box-shadow: inset 0 0 2px black;
}

footer {
    background-color: darkblue;
    color: white;
    text-align: center;
    padding: 20px;
}




/* Responsividade */
@media screen and (min-width: 401px){
    section {
        grid-template-columns: auto auto;
        grid-template-rows: auto auto auto;
    }
}

@media screen and (min-width: 701px){
    section {
        grid-template-columns: auto auto auto;
        grid-template-rows: auto auto;
    }
}








