When lists don̢۪t have an anchoring element such as an avatar or icon, spacing alone isn̢۪t always enough to separate tiles. In this case, full-bleed dividers can help create rhythm and separate individual tiles.
Because the grid itself creates visual distinction, grid lists do not need dividers to separate subheaders from content. In this case, the white space and the subheaders separate the sections of content adequately.
Full-bleed dividers separate sections or different types of content in both lists and page layouts.
Use inset dividers when anchoring elements such as icons or avatars are present in the Title Key Line.
When using a divider with a subheader, place the divider above the subheader to reinforce the relationship between the subheader and the content.