将span / h1样式添加到php

The below code is connected to a contact form. On submit, you receive one of two messages. How can I add span and h1 styles to these messages?

 <?php

    if($_GET['message'] == "thanks")  {  
        $message = "Message received! Thank you for contacting us.";
        } else {
        if($_GET['message'] == "wrongcaptcha")
        $message = "We are having problems processing your message. The captcha code you entered was incorrect.";
        }

?>


<div id="thankyoubox">
<p><?php echo $message?><p>

</div><!--end of thankyoubox-->

Thanks!

Either of these two ways will work:

$message = '<h1 style="color:#333;font-weight:bold;" >Message received! <span>Thank you</span> for contacting us.</h1>';

or

<h1><?php echo $message?><h1>

Alter your $message variable. For example:

$message = "<h1>Message received!</h1> Thank you for contacting us.";