How can I make footer bar full width, keep elements the same

Try adding to Design > Custom CSS

footer.Footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 99999;
    top: unset;
}
body {
    position: relative;
}
.Footer-inner.clear {
    max-width: 960px;
    margin: 0 auto;
}
.Site-inner {
    padding-bottom: 250px;
}
@media screen and (max-width:640px){
    .Site-inner {
    padding-bottom: 450px;
}
}