footer {
    background-color: var(--secondary-color);
    padding: 0 2rem;
}

#social-networks::after {
    content: '';
    width: 0.2rem;
    height: 5rem;
    background-color: var(--tertiary-color);
    margin-left: 0.5rem;
}

@media (min-width: 768px) {
    footer {
        padding: 0 3rem;
    }
}

@media (min-width: 992px) {
    footer {
        padding: 0 4rem;
    }

    #social-networks::after {
        content: none;
    }
}

@media (min-width: 1200px) {
    #social-networks::after {
        content: '';
        height: 2.5rem;
    }
}