Customizing the CSS for the post/page editor?

Right, Additional CSS only applies to the front end (visitor viewing area) of the website. You can add CSS to just the editor itself, but keep in mind, blocks are designed to fit in this Core column, so you may end up with some styling oddities if you change it. There may be other hard-coded … Read more

How can we create our own formatting style?

First, you need to add your CSS to both your front-end and editor stylesheet. Next, we’ll need to add a selector to the editor. I usually use the style select drop down which is normally disabled, but is perfect for this use case. /** * Add formatting select to WordPress WYSIWYG. */ function my_add_style_select_buttons( $buttons … Read more