Customizing with Additional CSS Grid issue

It seems that the css property: “grid-template-columns” is newish and is not yet recognised by the customiser. Will it let you save (or publish) ?
This leaves other options to customising your css, they include:
– adding this change to your child theme’s style.css file.
– installing one of the custom css plugins.
– putting this style rule inline in your page / post
– use the filter ‘safe_style_css’ to add this property to the list, you would need to be using a child theme to do this. There is an example of doing this here: https://stackoverflow.com/questions/27988379/wordpress-customizing-css-filters

As a desperate measure you could hack the customiser code to recognise this property. It looks like this is in a list in file: “wp-includes/kses.php”, normally I would never suggest doing this as your change will be lost in an update, but in this case you could live with this.

• This reply was modified 7 years, 2 months ago by RossMitchell.

Thank you @rossmitchell, I’ll just update the style sheet, for now, I just like seeing able to see live edits whilst I’m changing the CSS.