Retrospring/app/assets/stylesheets/overrides/_turbolinks.scss

.turbolinks-progress-bar {
  background: var(--turbolinks-progress-color);

  @include media-breakpoint-down('md') {
    top: unset !important;
    bottom: 45px !important;
    position: fixed;
    left: 0 !important;
  }
}