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This article introduces the relevant knowledge of "how CSS sets the center for different widths of the main body". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

From time to time, the width of the head and bottom is 100%, while the mode at both ends of the page is still wide, so you need to add three more div to achieve the center.

Add a div outermost layer to the Qiujia part and the bottom, set the center and width 100%

Add a div to the area at both ends, and set the css structure center and rest width value.

CSS Code:

.t-100 {margin:0 auto; width:100%} .t-center {margin:0 auto; width:1000px} / * if the width of both ends of the page is 1000px * /

In addition, CSS is no longer listed, simplifying your original CSS code.

HTML code in body:

100% width of the head

Mode locally assumes 1000px width

A small piece of form assumes 1000px width

Bottom 100% width

The width of the outer head and bottom is set at 100%, and it is centered. If there are 2 local 1000px widths at both ends, the width 1000px is added before and after the division, and the DIV structure is centered.

Although the head and bottom here may or do not need to add div, directly set the equipment margin:0 auto for the copies of # header and # footer, but the important preference is not to use float, how to ensure the center (even if the width is also set to center margin:0 auto).

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