:out-of-range
Targets form inputs when their value is outside the limits specified by 'min' or 'max' attributes (for example, typing 11 in a 1-10 range input).
Quick example
input:out-of-range {
/* Highlights the input field in red if the value is invalid */
background-color: #fee2e2;
border-color: #ef4444;
}:out-of-range Browser Support
Widely available Since 2015 96% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.
Safe to use without fallbacks.
10+
29+
5.1+
13+