What are the tag nesting rules in css

Introduction to nesting rules:

(Recommended tutorial: css quick start)

1. The body can directly contain blocks Shape elements, ins, del, script, etc. cannot directly contain inline elements;

2, ins and del (inline elements) can contain block elements or inline elements, and any other inline elements are not allowed to contain block elements. Elements;

3, p, h1-h6 can directly contain inline elements and text information, but block elements are not allowed;

4, dl elements are only allowed to contain dt and dd, and at the same time dt cannot contain block elements, only inline elements are allowed, and dd can contain any element;

5. The form element cannot directly contain input elements. The reason is that the input element is an inline element, and the form element can only contain block elements;

6. The table element can only contain caption, colgroup, col, thead, tbody, tfoot, and cannot directly contain tr or anything else. element;

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