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[Bootstrap4 Display property] How to switch between display and hide on responsive sites

When creating a responsive site with the Bootstrap4 grid system, I summarized the switching method to display […]

[Bootstrap4] How to switch side-by-side button groups vertically [Responsive]

Introducing how to switch the “Bootstrap4” “Horizontal” button group to “Vertical” by making it responsive. Ho […]

[Open Graph and Twitter Card Tags] Error handling [WordPress plugin]

This section explains how to deal with errors in WordPres plug-in “Open Graph and Twitter Card Tags&#822 […]

[WordPress] How to branch with custom post taxonomy term

Code <?php if (is_object_in_term($post->ID, ‘[taxonomy]’,'[term]’)){ ?> <?php } else { ?> <? […]

[WordPress] How to reflect CSS in the visual editor

Code functions.php add_editor_style(); add_editor_style(“editor-style.css”);; CSS wp-content/themes/[theme fol […]

[WordPress] How to prevent grandchild category from being created

Code functions.php function my_admin_style() { echo ‘<style> option.level-1{ display:none; } </style& […]