Fixed multiple bugs

【Contents of fixes and added functions】
■Fixed a bug in the parallax effect.
■Fixed a bug that the images set in the third block of the top page and the link box settings look rough.
■Fixed a bug that images set in the third block of the top page and link box settings looked rough.
■Adjusted the fixed footer bar for smartphones.
■Fixed support for PHP7.

The following are the files that have been modified for this update.
【Corrected files】
widget/ad.php
widget/category_list.php
widget/google_search.php
widget/menu_category_list.php
widget/recent.php
widget/styled_post_list1.php
widget/styled_post_list2.php
header.php
page-welcome.php
footer.php
content-pagenoside.php
content-page.php
content-archive.php
single.php
content.php
functions.php
parallax.js
style.css

For more information, please visit the AGENT (tcd033) download site for purchasers.