1) Is it possible for the URL link to open in a new browser window rather than the existing window?
2) What is the best way to customise the divider bar? I want to remove the blue star. I can see where the file is located in the folder. If I do this via child theme, where do I put the new image link?
The disadvantage is that this will make all URL in the footer to open in a new window.
Another way is to enter the HTML directly instead of using the shortcode (limitations of using shortcodes – hard to customize) –
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This means you can put the background image anywhere in the child theme and just have to change the url of the image. You can even upload the image to WordPress and then replace the above URL for the background to your image URL this way –