How can I remove CSS element style inline (without JavaScript)?

Question

I have a style assigned for a specific HTML element in my stylesheet file, like this

label {
  width: 200px;
  color: red; 
}

In one speci

Answer 1

The situation has somewhat changed in 6 years: now it is possible to remove a set CSS property without using JavaScript by using the initial, unset or revert keywords. These are supported in all modern browsers.