Why is the color of the menu on the iPhone without a background, but on the android everything is fine?

Question

iPhone

Here is the actual picture with the open menu on the iPhone

Answer 1

Either a bug (protest on a friend's iPhone), or a feature of safari.
That is, the developers of this site have a moment in the code that Safari does not support.

Answer 2

remove: ...

if (isset($_GET['recepient'])) {
    $recepient = $_GET['recepient'];
    $query = query("SELECT * FROM test WHERE `recepient` = '$recepient' ORDER BY ID DESC");
    while ($row = mysqli_fetch_assoc($query)) {
      echo $row['id']."| ".$row['recepient']." | ".$row['msg']."<br>";
    }
  } else {

and trailing }
Replace
on the
and
on As an option.