The name comes from Japanese bento boxes — compartmentalized lunch containers where rice, protein, vegetables, and pickles each get their own section. The design pattern migrated to interfaces through Apple, whose keynote slides and product pages have used asymmetric grids of rounded-corner cards since at least 2019.
Apple's approach was not new in principle — dashboard and widget layouts had used mixed-size grids for years. But Apple refined the aesthetic: softer corners, lighter shadows, more whitespace, and a deliberate sense of calm. When the design community started calling this pattern "bento grid" around 2022, the name stuck because it captured something the technical term "asymmetric card grid" did not — the feeling of neat, satisfying organization.
By 2023, bento grids were everywhere: SaaS landing pages, developer tool marketing sites, startup pitch decks. CSS grid's grid-template-areas made the layout trivial to implement, and the pattern's flexibility — any content fits in any cell — made it a reliable default for feature pages. It is now one of the most recognizable layout patterns in modern web design.