Multiple bug fixes

【Contents of the fix】
■Changed the specification to output eye catching images set in fixed pages as OGP images.
■Fixed the bug that “Layered Image Display Position (Vertical Direction for Mobile)” in “Layered Image Contents” of the fixed page “Landing Page” template is not reflected.
■Fixed a bug in the layout of the contributor archive page.
■Social Button Type 5 (Official Button) “Facebook Like Button” specification change support
■Fixed a bug that the text and buttons in the top page header content were not displayed at the expected width for tablets.
■Fixed a bug that prevented the Gutenberg Editor (Block Editor) from entering text in the “Free Space” of the fixed page “Landing Page” template.
■Fixed a bug in the output of the quick tags “heading h4” and “heading h5”.
■【Mac】Fixed a bug in which the thickness of Japanese and European characters may be displayed differently when using some fonts.

The following files have been fixed in this update.

【Modified file】
css/responsive.css
functions.php
functions/custom_editor.php
functions/head.php
functions/ogp.php
functions/page_lp.php
index.php
style.css
template-parts/sns-btn-btm.php
template-parts/sns-btn-top.php