CSS : margin - left : auto and margin-right: auto not working on input [ Beautify Your Computer : https://www.hows.tech/p/recommended.html ] ... ... <看更多>

You can think of margin-left: auto as to position the div to the rightmost position possible. This is mentioned in the docs: The left margin ... ... <看更多>

link to the post Width: auto When an element has auto as a value for width, it can have margin, padding, and border without becoming bigger ... ... <看更多>