gap
Flexbox and grid
The space between items — unlike margins, none is added on the outside.
| How to write it | gap: 0; |
|---|---|
| Common values | 0, 1rem, 8px 16px |
| Inherited | No — it stops at this element |
| Sets all of | row-gap, column-gap |
| Category | Flexbox and grid |
How to read this
- An inherited property only needs writing once on the parent — every child picks it up. Most text properties work this way.
- A shorthand resets whatever you leave out. Writing background: red alone also wipes a background image you set earlier.
- When rules collide, the more specific selector wins; only when specificity ties does source order decide.
- Animate transform and opacity for smoothness. Changing width or top forces the layout to be recalculated.
Frequently asked questions
Q. What is the CSS gap property?
The space between items — unlike margins, none is added on the outside.
Q. How do you write gap?
As gap: 0; Common values include 0, 1rem, 8px 16px.
Q. Is gap inherited?
No. It applies only where you write it, so each element needs its own declaration.
Q. What does the gap shorthand set?
row-gap, column-gap — and anything you leave out resets to its default.