JSFiddle - React, Tailwind, and code Playground
by shivanraptor
HTML
<div id="main_menu" onmouseover="$('#submenu').stop(true,false).slideDown();" onmouseout="$('#submenu').stop(true,false).slideUp();">Main Menu</div>
<div id="submenu">Some submenu contents here</div>
CSS
#main_menu {
width: 500px;
height: 30px;
background-color: #AAA;
}
#submenu {
width: 500px;
height: 20px;
display: none;
background-color: #CCC;
}