.x-group-item{margin-left:-var(--border-width)}.x-group-item:first-of-type{margin-left:0}.y-group-item{margin-top:-var(--border-width)}.y-group-item:first-of-type{margin-top:0}.x-group-item:focus,.y-group-item:focus{position:relative;z-index:1}:root{--border-width:1px}