Some snippets are used more than others, but I do think these are very useful and should be used to improve things visually.

Centre Divi Footer Menu

ul#menu-footer {
    float: none;
    text-align: center;
  }

Centre Divi Bottom Bar Content

#footer-info { 
width: 100%; margin:0 auto; text-align: center !important;
}

@media only screen and (min-width: 980px) {
#footer-bottom .et-social-icons { margin-bottom:-28px;
}
}

Let me know if you found these useful.