html, body {
    margin: 1em;
    padding: 0;
}

.grid-container {
    display: grid;
}

.grid-item {
    padding: .5em;
    font-size: 2em;
    color: black;
    display: flex;
    align-items: center;
    justify-content: center;
    }
    
header {
    background-color: palegoldenrod;
}

nav {
    background-color: lightcoral;
}

main {
    background-color: lightgreen;
}

aside {
    background-color: lightgray;
}

footer {
    background-color: gold;
}