What is the purpose of the grid-gap (or gap) property?
Jun 29, 2025 am 01:18 AMGrid-gap (or gap) controls spacing between grid items in CSS Grid. 1. It simplifies spacing by replacing manual margin/padding on items, ensuring consistency and cleaner layouts. 2. It can set equal spacing for rows and columns or be split into row-gap and column-gap for asymmetrical spacing. 3. Gap only applies between items, not around the grid edges, requiring container margin/padding for outer spacing.
Grid-gap (or gap) is used to control the spacing between grid items in a CSS Grid layout. It's a shorthand property for grid-row-gap and grid-column-gap, allowing you to set both values at once.
Simplifies Spacing Between Grid Items
Before gap was introduced, developers had to manually calculate and apply margins or padding to individual grid items to create spacing, which could lead to messy layouts and unnecessary complexity. With gap, you can define consistent space between rows and columns directly on the grid container, making your layout cleaner and more predictable.
For example:
.container { display: grid; gap: 20px; /* sets 20px space between both rows and columns */ }
This eliminates the need to add margin to every item and avoids issues like double spacing or misalignment.
Works with Row and Column Variants Separately
If you want different spacing for rows and columns, you can still use the longhand properties:
row-gap
(orgrid-row-gap
)column-gap
(orgrid-column-gap
)
Example:
.container { display: grid; row-gap: 30px; column-gap: 10px; }
This gives you flexibility when designing asymmetrical spacing while keeping your CSS readable.
Applies Only Between Items, Not Around the Edges
One important thing to remember: gap only adds space between grid cells, not around the outside of the grid. If you want spacing around the entire grid, you’ll need to use regular margin or padding on the container itself.
So if your grid looks cramped on the edges, don’t expect gap to fix it — that’s not what it's for.
Basically, gap makes it easy to manage internal spacing in a grid layout without relying on margins or extra wrappers. It’s straightforward but powerful, especially when building responsive designs where spacing consistency matters.
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