/* commentaire */
header {
    height: 60px;
    background-color: aquamarine;
    display: flex;
    justify-content: center;
    align-items: center;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style-type: none;
    gap: 1rem;
}

main {
    display: flex;
}

aside {
    background-color: blue;
    flex: 1
}

section {
    background-color: blueviolet;
    flex: 3;
}