php - When deploying the website, a gray area appears in the header of the page. I don't know what's going on?

Question

I wrote a website using HTML5, thinkphp, and bootstrap4.0beta. The homepage copied an online resource and tested it locally with phpstudy. The page effect is fine. But when deployed on Alibaba Cloud's lamp, a gray area appeared at the top of the page, which was very eye-catching. Guys, please help me...

PHP中文网 · Answer

There are extra characters in the html of your website homepage. It is recommended to check the template or the content output on the homepage
As shown in the picture:

三叔 · Answer

1. There is an extra string of characters under the body of the homepage:

If I delete this string, it will be normal.

2. The code structure is unreasonable

This paragraph should be placed in

習慣沉默 · Answer

Just remove the BOM header from all template files

typecho · Answer

Keyword: BOM header

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