.s-multiselect-tree-flat [data-indent]:not([data-indent="1"]):after{content:"";z-index:-1;pointer-events:none;background-image:linear-gradient(to right,var(--ui-border) 1px,transparent 1px);background-repeat:repeat-x;background-size:25px 100%;position:absolute;inset-block:0;inset-inline-start:20px}.s-multiselect-tree-flat [data-indent="2"]:after{width:1px}.s-multiselect-tree-flat [data-indent="3"]:after{width:26px}.s-multiselect-tree-flat [data-indent="4"]:after{width:51px}.s-multiselect-tree-flat [data-indent="5"]:after{width:76px}.s-multiselect-tree-flat [data-indent="6"]:after{width:101px}