$("#signup-form").validate({
            rules: {
                email: "required email",
                username: "required"
            },
            messages: {
                email: {
                    required: "Enter your Email",
                    email: "Please enter a valid email address.",
                }
            }
        })


#signup-form .error {
    z-index: 1000;
    font-size: 14px;
    float: right;
    color:red
}