JSFiddle - React, Tailwind, and code Playground
HTML
<button type="button" class="btn btn-default" id="btn-collapse">Left</button>
<div id="mapBlock" >
</div>
CSS
#mapBlock{
position:relative;
width:150px;
height:150px;
margin: 50px auto;
background: #e7e7e7;
}
JavaScript
$(document).ready(function() {
$("#btn-collapse").click( function(){
$("#mapBlock").slideToggle("slow");
});
});