:valid

The :valid CSS pseudo-class represents any <input> or <form> element whose content validates correctly according to the input's type setting. This allows to easily make valid fields adopt an appearance that helps the user confirm that their data is formatted properly.

Syntax

:valid { style properties }

Examples

This example presents a simple form that colors elements green when they validate and red when they don't.

HTML Content

<form>
  <label>Enter a URL:</label>
  <input type="url" />
  <br />
  <br />
  <label>Enter an email address:</label>
  <input type="email" required/>
</form>

CSS Content

input:invalid {
  background-color: #ffdddd;
}

form:invalid {
  border: 5px solid #ffdddd;
}

input:valid {
  background-color: #ddffdd;
}

form:valid {
  border: 5px solid #ddffdd;
}
  
input:required {
  border-color: #800000;
  border-width: 3px;
}

input:required:valid {
  border-color: #008000;
}

Specifications

Specification	Status	Comment
WHATWG HTML Living Standard The definition of ':valid' in that specification.	Living Standard	No change.
HTML5 The definition of ':valid' in that specification.	Recommendation	Defines the semantic regarding HTML and constraint validation.
Selectors Level 4 The definition of ':valid' in that specification.	Working Draft	No change.
CSS Basic User Interface Module Level 3 The definition of ':valid' in that specification.	Candidate Recommendation	Defines the pseudo-class, but not the associated semantic.

Browser compatibility

See also

• :invalid, :required, :optional