What jana meant was to add .ljtags :after { content: ","; } to your css. It adds a comma to your tags. That's what content: ","; means. If you want to use another separator, you replace the comma with the separator you want to use instead. You can add the code anywhere in your css, but if you'd like to keep things organized I recommend adding it to the section that says "TAGS AND TAGS-PAGE".
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.ljtags :after { content: ","; }
to your css. It adds a comma to your tags. That's what content: ","; means. If you want to use another separator, you replace the comma with the separator you want to use instead. You can add the code anywhere in your css, but if you'd like to keep things organized I recommend adding it to the section that says "TAGS AND TAGS-PAGE".