Making radio button as a required field using bootstrap

by ringstaff

HTML

<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/css/bootstrap.min.css">
<form class="form-signin" action="firstLogin.action" method="post">
     <h2 class="form-signin-heading">Please sign in</h2>

    <input type="text" class="form-control" name="username" placeholder="User Name" required autofocus>
    <br>
    <input type="password" class="form-control" name="password" required placeholder="Password">
    <br>
    <div >
        <input type="radio" name="radio-choice" required>Admin</input>
        <input type="radio" name="radio-choice" required>User</input> 
    </div>
    <div>
    <br>
    <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
</form>

CSS

input:required,
textarea:required {
  border-color: red !important;
}