How Can I Fix the  Characters Appearing at the Beginning of My CSS File?

Resolving the Enigma of 

Your query regarding the presence of unidentified characters at the start of your CSS file has unveiled an underlying issue of Byte Order Mark (BOM). It's essentially a Unicode representation that specifies the file's encoding.

To address this issue, instruct your editor to eliminate BOMs during file saving. Alternatively, opt for a text editor with built-in BOM removal capabilities.

If you desire an automated approach, awk can effectively remove BOMs, as suggested in previous discussions on this topic.

Another recommended solution is to enable PHP to correctly interpret the BOM. This can be achieved through the use of the mb_internal_encoding() function, which allows you to specify the encoding for file reading, ignoring any present BOM.

Here's an example:

<?php
// Store previous encoding for later restoration if needed.
$previous_encoding = mb_internal_encoding();

// Set internal encoding to UTF-8 to disregard BOMs while reading.
mb_internal_encoding('UTF-8');

// Process and merge CSS files.

// Return to the original encoding.
mb_internal_encoding($previous_encoding);

// Continue with your PHP code.
?>

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