src/sass/layout/_footer.scss

// Desktop mode
@include media-breakpoint-up(lg) {
 .footer {
 position: fixed;
 bottom: 0;
 right: 0;
 left: get($aside-config, width);

 // Aside default enabled, aside fixed, header sticky & aside minimize modes
 .aside-enabled.aside-fixed.[data-kt-aside-minimize="on"] & {
 left: get($aside-config, minimized-width);
 transition: left get($aside-config, transition-speed) ease;
 }
 }
}