.footer
{
    transition: 0.2s;
    padding: 1em;
    p
    {
        text-align: center;
        font-size: 1em;
    }
}

@media (max-width: 600px)
{   
    .footer
    {
        transition: 0.2s;
        padding: 1em;
        p
        {
            text-align: center;
            font-size: 0.75em;
        }
    }
}