Adaptive layout is a common layout form in web design. Adaptive layout can automatically change its width and height values according to the size of the browser window. It is a very flexible layout form. A good adaptive layout website can respond to different resolutions. High-efficiency monitors can provide the best display effects. In fact, the default state of div occupies the entire row of space, which is the expression of an adaptive layout with a width of 100%. The work we need to do for a column of adaptive layout is also very simple. We only need to change the width from a fixed value to a percentage value. in the form.