Select and style only if the <input> element does not have a "required" attribute:
The :optional selector selects form elements which are optional.
Form elements with no required attribute are defined as optional.
Note: The :optional selector only applies to the form elements: input, select and textarea.
Tip: Use the :required selector to select form elements which are required.
| Version: | CSS3 |
|---|
The numbers in the table specifies the first browser version that fully supports the selector.
| Selector | |||||
|---|---|---|---|---|---|
| :optional | 10.0 | 10.0 | 4.0 | 5.0 | 10.0 |
CSS Selector :required
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