JSFiddle - React, Tailwind, and code Playground

by Mac1ovin

HTML

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<div class='fact'> //btnHide
  <button class="btnMore" onclick="showMore()" href='#'>скрыть рестики</button>
  <div class='mainHide'> //mainHide
    dfsdfsdfsdfsdfds
  </div>

</div>

CSS

.mainHide {
  display: none;
  }

  .btnMore {
    text-decoration: none;
  }

JavaScript

function showMore() {
  let content = document.getElementsByClassName("mainHide")[0];
  content.classList.remove("mainHide");
}