Note: This code is applicable to the theme making partners, because there are four display modes of the head image set in the background appearance settings.If it is a theme for yourself, you can greatly reduce the code volume on this basis.If it's just for yourself
When describing the handhome topic comment, if it is a sub comment, there will be an @ someone anchor link in front of the comment content.Since the navigation at the top of the theme occupies 50px height, when clicking the anchor link
The official document is relatively concise in this regard, which is not conducive to the topic modifier getting a quick start with typecho, so it summarizes some experience for your own convenience