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Focus Within  visualinteractivity

Changes the appearance of a form if any of its children are focused.

HTML
<div class="focus-within">
  <form>
    <label for="given_name">Given Name:</label> <input id="given_name" type="text" /> <br />
    <label for="family_name">Family Name:</label> <input id="family_name" type="text" />
  </form>
</div>
CSS
form {
  border: 3px solid #2d98da;
  color: #000000;
  padding: 4px;
}

form:focus-within {
  background: #f7b731;
  color: #000000;
}
Demo

Explanation
  • The psuedo class :focus-within applies styles to a parent element if any child element gets focused. For example, an input element inside a form element.
Browser support

85.4%

⚠️ Not supported in IE11 or the current version of Edge.