JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>

<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<title>Untitled 1</title>
</head>

<body>

<h2 class="widgettitle">Support Forums</h2>
<form action="https://www.publictalksoftware.co.uk/wp-login.php" class="bbp-login-form" method="post">
	<fieldset>
	<div class="bbp-username">
		<label for="user_login">Username: </label>
		<input id="user_login" name="log" size="20" tabindex="103" type="text" value="">
	</div>
	<div class="bbp-password">
		<label for="user_pass">Password: </label>
		<input id="user_pass" name="pwd" size="20" tabindex="104" type="password" value="">
	</div>
	<div class="bbp-remember-me">
		<input id="rememberme" name="rememberme" tabindex="105" type="checkbox" value="forever">
		<label for="rememberme">Remember Me</label> </div>
	</fieldset></form>

</body>

CSS

.bbp-login-form input[type=text], .bbp-login-form input[type=password], .bbp-login-form select {
  width: 100% !important;
  display: inline-block !important;
  border: 1px solid #ccc;
  border-radius: 4px;
	-moz-border-radius:4px;
  -webkit-border-radius:4px;
  box-sizing: border-box;
	color: #000;
	background-color: #c1c1c1;
}

.bbp-login-form label {
	text-align:left;
  width: 100% !important;
  margin: 10px 0;
  display: inline-block !important;
}

.bbp-login-form .bbp-remember-me label {
	text-align: center;
  width: 50%;
}