.grid {
    display: grid;
}

.grid-c {
    justify-items: center;
    grid-template-columns: 1fr;
    grid-template-areas:
            "header"
            "container"
            "footer"
}


/* AREAS */

.header {
    grid-area: header
}

.container {
    grid-area: container
}

.footer {
    grid-area: footer;
}