box-shadow
Borders
Casts a shadow around the box; inset moves it inside.
| How to write it | box-shadow: none; |
|---|---|
| Common values | none, 0 1px 3px rgba(0,0,0,.2), inset 0 0 0 1px #ddd |
| Inherited | No — it stops at this element |
| Category | Borders |
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 box-shadow property?
Casts a shadow around the box; inset moves it inside.
Q. How do you write box-shadow?
As box-shadow: none; Common values include none, 0 1px 3px rgba(0,0,0,.2), inset 0 0 0 1px #ddd.
Q. Is box-shadow inherited?
No. It applies only where you write it, so each element needs its own declaration.
Q. What group does box-shadow belong to?
The borders group.