What is the syntax of CSS sub-selector

This article mainly explains "what is the grammar of CSS sub-selector". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the grammar of CSS sub-selector".

Grammatical interpretation

You should have noticed that the sub-selector uses the greater-than sign (sub-combinator).

There can be blank spaces on both sides of the subcombination, which is optional. Therefore, there is no problem with the following words:

H2 > strongh2 > strong

If you read from right to left, the selector H2 > strong can be interpreted as "selecting all strong elements that are children of H2 elements."

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