Hi everyone.
Here is the XSS Challenge - CT1
source code for your better understanding.
<?php header('X-Frame-Options: deny'); ?>
<head>
<meta charset="utf-8">
<meta name='description' content='This is about <?php echo htmlspecialchars(str_replace('+', '', $_GET['xss'])); ?>'>
<title>XSS Challenge</title>
</head>
<body><center>
<p><a href="?xss=XSS"><img src="safuda.PNG"><br>āĻā§āĻ°āĻ¸ āĻā§āĻ°āĻ¸ āĻāĻ°ā§ XSS āĻŽāĻžāĻ°āĻ¤ā§ āĻšāĻŦā§...!</a></p></center>
</body>