Here is an example of HTML with CSS classes that float elements left and right:
<div class="block-footer">
<button class="medium float-left">A</button>
<button class="medium float-left">A</button>
<button class="medium float-left">A</button>
<button class="medium float-right">A</button>
<button class="medium float-right">A</button>
</div>
In this code, the div may not occupy vertical space, causing layout issues. To address this problem, you can modify the HTML as follows:
<div class="block-footer">
<button class="medium float-left">A</button>
<button class="medium float-left">A</button>
<button class="medium float-left">A</button>
<button class="medium float-right">A</button>
<button class="medium">A</button>
</div>
By adjusting the HTML in this way, the div element will now occupy space as desired.
If you need to have buttons float left and right while ensuring the proper vertical spacing within the div, consider using a combination of CSS styles and possibly restructuring the layout to achieve the desired result.