Shulou(Shulou.com)06/01 Report--

This article mainly shows you "css how to achieve stacking order", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to achieve stacking order" this article.

Stacking order

When positioning is set on multiple elements at the same time, there may be overlap between positioning elements.

In CSS, to adjust the stacking order of overlapping positioning elements, you can apply the z-index cascading level attribute to the positioning elements, which can be positive integers, negative integers, and 0.

Note:

The default attribute value for z-index is 0, and the higher the value, the higher the positioning element is in the cascading element.

If the values are the same, the latter will catch up according to the writing order.

The following numbers must not be added by units.

Only relative positioning, absolute positioning, fixed positioning have this attribute, the rest of the standard stream, floating, static positioning do not have this attribute, and can not specify this attribute.

Title .dv1 {width: 200px; height: 100px; background-color: blue; position: absolute; / * failure without positioning * / z-index: 1;} .dv2 {width: 200px; height: 100px; background-color: red; position: absolute Top: 50px; left: 100px;}

The above is all the content of the article "how to achieve stacking order in css". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.