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

This article mainly explains "how CSS selects elements according to context". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how CSS selects elements according to context".

Select elements according to context

We can define descendant selectors to create rules that work in some document structures and not in others.

For example, if you want to apply styles only to the em element in the H2 element, you can write:

H2 em {color:red;}

The above rule turns the text of the em element that is a descendant of the H2 element red. Other em text, such as em in paragraphs or block references, is not selected by this rule:

This is an important heading

This is an important paragraph.

Thank you for reading, the above is the content of "how CSS selects elements according to context". After the study of this article, I believe you have a deeper understanding of how CSS selects elements according to context, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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.