JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>The Problem with Submit in Opera</title>
</head>
<body>
<form action="/handler.php" method="post">
<input type="text" name="newsletter" id="newsletter">
<input type="submit" id="newsletter-button">
</form>
</body>
</html>

CSS

body {
background: #000;
}
form {
margin: 30px 0 0 20px;
}
:focus {
outline: none;
}
#newsletter {
background: transparent;
border: 1px solid #ccc;
}
#newsletter-button {
background: transparent;
border: 1px solid #ccc;
color: #fff;
cursor: pointer;
}