The default columns block you can use in the editor is extended as such. When you have selected column, you can set the widths breakpoint in the sidebar of the editor.. On save, this plugin adds CSS classes to the columns block and its columns. When you save your page or post, CSS classes are added to each column that enables you to specify the width per breakpoint. Instead of adding CSS class for the corresponding breakpoint, the same value used for the previous breakpoint is inherited. For example selecting 12, 'inherit, 12, and 'inherit for the breakpoints extra-small, small, medium and large, respectively, will in the classes u-6 12@xs u-3 12@md being added to column... When column is selected, you can set the width breakpoint in the sidebar... Upload the plugin files to the wp-content plugins ff-block-advanced-columns directory of your site or blog, or install the plugin through WordPress plugins screen directly.. Activate the plugin through 'Plugins screen WordPress... Interested in development.., check out SVN repository, or subscribe to the development log by RSS...
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