JSFiddle - React, Tailwind, and code Playground

HTML

<div class="form">
			<form>
				<input type="text" class="form-name" placeholder="Ваше имя">
				<input type="tel" class="form-tel" placeholder="Ваш телефон">
				<input type="url" class="form-url" placeholder="Адрес сайта">
				<input type="submit" class="form-submit" value="жми">
			</form>
			<span><img src="https://cdn1.iconfinder.com/data/icons/significon/512/Significon-Like-20.png" alt="" /></span>
	
		</div>

CSS

/*** Форма ***/
.form {
	position: relative;
	top: -44px;
	margin: 0 auto;
	width: 940px;
	padding: 25px;
	background: #272726;
	border: 3px solid #27ae60;
	border-radius: 3px;
}
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"] {
	color: #adb1af;
	outline: none;
	font-family: 'PT Sans Bold', Arial, sans-serif;
}
.form-name, .form-tel, .form-url {
	padding: 2px 5px;
	width: 266px;
	border: 3px solid #27ae60;
	border-radius: 3px;
	font-size: 1.8em;
}
input[type="submit"] {
	outline: none;
	color: #f0f7f3;
}
.form-submit {
	padding: 2px 10px;
	background: #27ae60;
	border: 3px solid #27ae60;
	border-radius: 3px;
	font-size: 1.8em;
}
.form  span {
	display: none;
}

JavaScript

<script>
				document.forms[0].addEventListener('submit', function(e) {
   document.getElementsByTagName('span')[0].style.display = 'inline-block';
    e.preventDefault();
});
			</script>