Question

How can I change the background of a parent <div> when an <input> or <a> is :focus’d (or any other dynamic pseudo-class?

Eg

<div id="formspace">
<form>
<label for="question">
How do I select #formspace for the case when a child is active?</label>
<input type="text" id="question" name="answer"/></form></div>

Answer 1

You can use has():

div:has(input:focus), 
div:has(a:focus) {
    background: pink;
}

---

Unfortunately css doesn’t support parent selectors. 🙁
So the only way to do it is to use javascript like the [jQuery parent method][1].

Update:
CSS Selectors Level 4 will support parent selectors! http://www.w3.org/TR/selectors4/#subject