outline-width
Sets the thickness of the outline around an element. It works exactly like 'border-width'.
Quick example
input:focus {
/* Makes the focus outline thicker */
outline-width: 3px;
}Quick facts
Initial value
mediumInherited
No
Applies to
all elements
Animation type
length
outline-width Browser Support
Widely available Since 2017 96% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2017.
Safe to use without fallbacks.
1+
1.5+
1.2+
12+