Go语言中的defer关键字用于在函数返回前执行一些特定的操作。可以将defer看作是一种后置语句，在函数中的任何位置都可以使用。
So I added some code in my css and there are boxes that appear over every image that is attached to a post. I\'ve wanted to number the images and show the image number in the box(1...n). I have this i
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