I have a list of boxes on my website:

```
box1    box2    box3
box4    box5    box6
box7    box8    box9

```

Does anybody have a suggestion how to mark every box in the middle of the list (box2, box5, box8)?

Thanks for your help!

Here's my foreach loop:

```
<?php foreach($usersResult as $user) { ?>
    <div class="box">
        // other stuff here
    </div>
<?php } ?>

```