JSFiddle - React, Tailwind, and code Playground

by Qwerty_Wasd

HTML

<a href="#">Наведи</a>
<div class="block"></div>

CSS

* {
  text-align: center;
  margin: 0 auto;
}
.block {
  width: 200px;
  height: 80px;
  background: green;
  margin-top: 10px;
  opacity: 0;
  transform: scale(0);
  transition: all 1s ease-in-out 5s;
}

.hover {
  transition: all 1s ease-in-out;
  opacity: 1;
  transform: scale(1);  
}

JavaScript

$('.block').on('mouseover', function(){
  $(this).addClass('hover');
}).on('mouseout', function(){
  $(this).removeClass('hover');
});

$('a').on('mouseover', function(){
  $('.block').addClass('hover');
}).on('mouseout', function(){
  $('.block').removeClass('hover');
});