最佳答案
这是一个 Whitespace-only text node .
Firefox 将节点之间的换行符呈现为正方形内的点符号。
Since Firefox 52, the Inspector displays these whitespace nodes, so you can see where the gaps in your markup come from. Whitespace nodes are represented with a dot: and you get an explanatory tooltip when you hover over them
关于html - 无法从 wordpress 模板的菜单中删除奇怪的元素，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55701666/