Multiple bug fixes

【Contents of the fix】
■Social Button Type 5 (Official Button) “Facebook Like Button” specification change.
■【macOS Big Sur】 Fixed an issue where the YouTube video in the top page header content would not play in the Chrome browser.
■【Mac】 Fixed an issue where the thickness of Japanese and European characters may appear differently when using some fonts.

The following are the files that have been fixed in this update.

【Modified file】
admin/assets/css/editor-style.css
admin/assets/css/editor-style.min.css
admin/inc/basic.php
assets/css/jquery.mb.YTPlayer.min.css
assets/js/jquery.mb.YTPlayer.min.js
inc/head.php
pagebuilder/assets/css/pagebuilder.css
style.css
template-parts/sns-btn-btm.php
template-parts/sns-btn-top.php