<a href="#">hover
<div class="div2">
<p>qwerqwerqwer</p>
</div>
</a>
a:hover .div2{
animation: 0.5s div2 ease-in forwards;
}
a:hover p{
display: block;
}
@keyframes div2{
0%{height: 0; }
100%{height: 200px; }
}
.div2{
width: 200px;
background-color: red;
}
p{
display: none;
}