Responsive Footer with CSS

Question

I’m trying to make a footer that is always at the bottom of the page and that is responsive to the other items. But it only works on a page with a lot of content that takes up all the space, on pages with fewer items it stays in the middle of the screen. And if I put more items on the page, it doesn’t go down, it goes over the items.

What can I do to improve?

Footer on the right page Footer in the middle of the screen

footer {
    margin-top: 50px;
    height: 62px;
    background: #eeeeee;
    position:relative;
    width: 100%;
}

footer p {
    padding-top: 23px;
    font-size: 14px;
    color: #999999;
    text-align: center;
    line-height: 16px;
}

<footer>
   <p>Todos direitos reservados, receitas Foodfy.</p>
</footer>