Pseudo-classes

Add the missing selector and pseudo-class so that style is applied to the Four and Eight elements.

<ul>
  <li>One</li>
  <li>Two</li>
  <li>Three</li>
  <li>Four</li>
  <li>Five</li>
  <li>Six</li>
  <li>Seven</li>
  <li>Eight</li>
  <li>Nine</li>
  <li>Ten</li>
</ul>

... {
    border-style: solid;
}

In the answer box, enter only the missing selector with a pseudo-class.