JSFiddle - React, Tailwind, and code Playground

HTML

<div class="price">
<span class="name">Подробнее</span>
<div class="popap">попап</div>
</div>

CSS

.name {
    font-size: 12px;
    cursor: pointer;
}
.popap {
    border: 1px solid #252525;
    height: 660px;
    display: none;
}

JavaScript

$(".name").toggle(function(){
    $(".popap").css("display", "block");
},function(){
    $(".popap").css("display", "none");
});