<footer class="small text-center fixed-bottom">
        <span class="text-muted">Copyright © WompMacho 2020</span>
</footer>

<style>
    footer{
        margin-top: 1em;
        bottom: 0vh;
        width: 100%;
        height: 40px;
        line-height: 40px;
        background-color: #252526;
    }
</style>