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- CSS :link :hover :active
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- CSS :nth-child()
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- CSS :focus
- CSS :not()
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- CSS :target
- CSS :lang()
- CSS :valid
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- CSS :in-range
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- CSS :enabled :disabled
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- CSS ::before
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- CSS Colors
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- CSS rgb() and rgba()
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- CSS Background
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- CSS Create Frames
CSS :invalid - Style FORM INPUT fields having Invalid Inputs/Values
The CSS :invalid pseudo-class is used when we need to select and style FORM field with invalid inputs. For example:
HTML with CSS Code
<!DOCTYPE html> <html> <head> <style> input:invalid {color: red;} </style> </head> <body> <form> Enter Email ID: <input type="email"><br/> Enter a Number: <input type="number" min="10" max="100"> </form> </body> </html>
Output
Enter Email ID:
Enter a Number:
Enter a Number:
In above example, when user enters an invalid email id, then the color of entered value will be red. Similarly, for the second FORM field, if user enters a value less than 10, or greater than 100, will become red colored number.
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