JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>


<div id="contacts">Контакты</div>
<div id="block" class="blockA" style="display:none;">Текст</div>

CSS

.animated {
  -webkit-animation-duration: 1s;
  animation-duration: 1s;
  -webkit-animation-fill-mode: both;
  animation-fill-mode: both;
}
@-webkit-keyframes fadeInDown {
  0% {
    opacity: 0;
    -webkit-transform: translateY(-20px);
    transform: translateY(-20px);
  }

  100% {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  0% {
    opacity: 0;
    -webkit-transform: translateY(-20px);
    -ms-transform: translateY(-20px);
    transform: translateY(-20px);
  }

  100% {
    opacity: 1;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
  }
}

.fadeInDown {
  -webkit-animation-name: fadeInDown;
  animation-name: fadeInDown;
}
@-webkit-keyframes fadeOutDown {
  0% {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }

  100% {
    opacity: 0;
    -webkit-transform: translateY(20px);
    transform: translateY(20px);
  }
}

@keyframes fadeOutDown {
  0% {
    opacity: 1;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
  }

  100% {
    opacity: 0;
    -webkit-transform: translateY(20px);
    -ms-transform: translateY(20px);
    transform: translateY(20px);
  }
}

.fadeOutDown {
  -webkit-animation-name: fadeOutDown;
  animation-name: fadeOutDown;
}

.blockA{
background: #ccc;
padding:15px;
}
.displayed{
	display: block;
}

JavaScript

$(document).ready(function(){
    $("#contacts").toggle(function(){
        $("#block").addClass("animated fadeInDown").css('display','block');
        
    },function(){
    	$("#block").addClass("animated fadeOutDown");
    	
 }, function(){
 	$('#block').removeClass('fadeOutDown');
 });
});