Multiple bug fixes

【Contents of the fix】
■Fixed a bug that the back button on the top page may break the link when the “WordPress address” in the general settings and the “Site address” are different.
■Adjusted the style of the hamburger menu when viewed from a smartphone.

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

For more information, please visit the AVALON (tcd040) download site for purchasers.