E:not(s)

Matches an E element that does not match simple selector s (Source: W3C)

HTML:

1. <div>
2. <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
3. <p class="secondParagraph">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
4. <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
5. </div>

CSS:

1. div p:not(.secondParagraph){font-style:italic}

Output:

In the example the first and third paragraph should be set in italic.