Hello! I just finished this challenge and was actually using the your proposed structure -- one div to wrap all 3 subcomponents(sedan, suvs, luxury) inside. And it worked very well.
I noticed you have 3 class selectors for sedans, suvs and luxury. And like you proposed, since they share the same style, you could give all 3 of them one shared class (I used 'panel-item') before their current class like this
<div class="panel-item sedans_cards">
</div>
Then if you style this shared class 'panel-item' in your CSS, all 3 subcomponents will have the same styles -- basically, style once, and use 3 times plus easier for debugging. Then all the stylings left for sedans, suvs and luxury are their unique background-color
or border-radius
, which could be done in their individual styling block.
I hope this helps and let me know if you need further explanations!