body #masthead{border-bottom:1px solid transparent!important}
/* Important declarations must share the existing border layer to override it. */
@layer interface-borders{
 html body #masthead{border-bottom-color:transparent!important}
 html body #masthead.is-scrolled{border-bottom-color:var(--interface-border,var(--line,#f1f3f5))!important}
}
body .design-footer{border-top:0!important}