Fixed bugs in fixed pages and smartphone widgets

【Details of the fix】
■Fixed a bug that the style of the smartphone version is not applied when the fixed page is set to “Do not show side content”.
■Fixed the bug that the “+” icon of the category widget in the footer area is displayed above the fixed header when viewed on a smartphone.

The following are the files that have been modified for this update.
【Corrected files】
functions/head.php
responsive.css
style.css

For more information, please visit the MAG(tcd036) download site for purchasers.