JSFiddle - React, Tailwind, and code Playground

HTML

<script>
	function toggleCollapsibleSectionWithAnimation() {
		this.classList.toggle("collapsible-active");
		var buttonId = this.id;
		var sectionId = buttonId.replace("button","section");
		var content = document.getElementById(sectionId);
		if (content.style.maxHeight) {
		  content.style.maxHeight = null;
		} else {
		  content.style.maxHeight = content.scrollHeight + "px";
		}
	}</script>

<button class="collapsible" id="collapsible-button-0" onclick="toggleCollapsibleSectionWithAnimation.call(this)"><b>Model</b> (show/hide)</button>
<div class="collapsible-content" id="collapsible-section-0">

<h1>
content
</h1>


</div>

CSS

/* Style the button that is used to open and close the collapsible content */
.collapsible {
  background-color: transparent;
  color: #444;
  cursor: pointer;
  width: auto;
  border: none;
  text-align: left;
  outline: none;
  font-size: 15px;
}

/* Add a background color to the button if it is clicked on (add the .active class with JS), and when you move the mouse over it (hover) */
.collapsible-active, .collapsible:hover {
  text-decoration: underline;
}

/* Style the collapsible content. Note: hidden by default */
.collapsible-content {
  max-height: 0;
  padding: 10px;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
}

/* Style the collapsible content. Note: shown by default */
.collapsible-content-shown-by-default {
  max-height: 100%;
  padding: 10px;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
}