Problem with adding text on mobile page images_html/css_WEB-ITnose

Part of the page is a picture as the background, and then text is displayed on the background. The text is variable in the background. I am not sure what the word is, but the length is determined. The problem now is that the positioning is not accurate. On some mobile phones, it is Okay, on some phones it's down. Please tell me how to write the code.
This is what I wrote:





< ;meta http-equiv="Content-Type" content="text/html; charset=gb2312" />

Text description [variable]

Reply to discussion (solution)

It’s best to post pictures, you can’t see the effect

Sample picture, the same proportion as the original picture, please give me some guidance.