How to test Pseudo-classes : Pseudo-elements and pseudo-classes

How to test Pseudo-classes : Pseudo-elements and pseudo-classes

Lets say your element looks like

<div id="structuralPseudo">

<span>span1</span>

<span>span2</span>

<span>span3</span>

<span>span4</span>

<div>div1</div>

<div>div2</div>

<div>div3</div>

<div>div4</div>

</div>