:focus
A pseudo-class that targets an element that has been selected (e.g., clicked or tabbed to) and is ready to receive input.
Syntax
/* Usage Example */
input:focus {
/* Changes background color when the user selects the input */
background-color: #f3f4f6;
outline: none;
border: 1px solid #3b82f6;
}:focus 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.
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