为什么将元素设置为内联块状元素背景会变大？这个和浏览器设置有没有关系？

Answer 1

Why does the background of a block element become larger when it is set to inline? Does this have anything to do with browser settings? -PHP Chinese website Q&A-Why does the background of an element become larger when it is set as an inline block element? Does this have anything to do with browser settings? -PHP Chinese website Q&A

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Answer 2

a在开始的时候是内联元素，内联元素不可以设置宽和高。将元素设置为内联块状元素之后，可以设置宽和高了，之前设置的宽和高的值起作用了，所以背景变大了。