Help making php display larger

[Jim]

I've got a php script to enable users to upload files to a server.  It 
works, but when testing it on my android phone, I saw the text is really 
small.   How can I make it appear larger on an android device?  Here's 
the script.

thanks


<?php
     if (isset($_FILES['upload'])) {
         $uploadDir = '/var/www/uploads/'; //path you wish to store you 
uploaded files
         $uploadedFile = $uploadDir . basename($_FILES['upload']['name']);
         if(move_uploaded_file($_FILES['upload']['tmp_name'], 
$uploadedFile)) {
             echo 'File was uploaded successfully.';
         } else {
             echo 'There was a problem saving the uploaded file';
         }
         echo '<br/><a href="FileUpload.php">Back to Uploader</a>';
     } else {
     ?>

         <form action="upload.php" method="post" 
enctype="multipart/form-data">
             <label for="upload">File:</label>
             <input type="file" name="upload" id="upload"><br/>
             <input type="submit" name="submit" value="Upload">
             </form>
         <?php
     }
?>