JSFiddle - React, Tailwind, and code Playground

HTML

<div class="iphone__container">
    <ul class="iphone__list iphone__models">
        <li class="iphone__model iphone__model_6s">6s</li>
    </ul>
    <ul class="iphone__list iphone__problems">
        <li class="iphone__problem">Замена <br/> экрана</li>
    </ul>
</div>

CSS

.iphone__problems {
    display: none;
}

JavaScript

$('.iphone__model').on('click', function(){
   $('.iphone__list').toggle();
});