When i click the submit button the php doc will be downloaded and not executed. Why ?
<section class="u-clearfix u-section-1" id="sec-f8d1">
<style>
body {
background-image: url('C:/xampp/htdocs/Kulinarik/Kulinarik/images/Login_Hintergrund.jpg');
background-repeat: no-repeat;
background-attachment: fixed;
background-size: 100% 100%;
}
</style>
<div class="u-clearfix u-sheet u-sheet-1">
<form action="ldap.php" method="POST">
<input type="text" name="username" /><br>
<input type="password" name="password" /><br>
<input type="submit" value="Login" href="ldap.php"/>
</form>
</div>
</section>