Previously, for convenience, I directly modified the file on the server and then clicked save, but the problem was that there was a strange blank line at the top, 1
Figure 1
Code 2 originally edited in source code
Figure 2
However, the external style of FF or Chrome is in the body, not in the head, 3
Figure 3
Let's look at the Google body, but there is no terminal with a blank line, 4
Figure 4
At the same time, when you view the source code in FF, you can find that the head and body do not end to red, while other pages except the first line <HTML> marked red, other Head, body is black, 5
Figure 5
Work und: save this page as the UTF-8 format and display everything as normal
Thinking: this problem is very likely to have saved the UTF-8 with BOM format!
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