index.php

<?php
if (isset($_POST['Licht1'])) {shell_exec("sudo bash skript1.sh");}
...
if (isset($_POST['Licht6'])) {shell_exec("sudo bash skript6.sh");}
?>

<!DOCTYPE HTML>
<html>
...

<form action="" method="post">
    <div class="style">
    <br>
    <button class="Button" type="submit" name="Licht1">Lampe 1 toggeln</button>
    </div>

    ...

    <div class="style">
    <br>
    <button class="Button" type="submit" name="Licht6">Lampe 6 toggeln</button>
    </div>

...
</html>