Multiple annotations found at this line

Developed under Eclipse, JSP pages sometimes report multiple annotations found at the This line error

The reason: the location of these tags, or the attribute does not conform to the HTML specification, but does not affect the normal representation of these labels

Like what:

<span><div></div></span>

The div tag in the middle will report the following error

"Multiple annotations found at this line:
-Invalid location of tag (DIV).
-Invalid location of tag (div). "

The reason is that span is an inline element, and div belongs to a block element

Inline elements are placed in a block element and do not conform to HTML rules, so an error occurs

Description of block elements and inline elements:
Http://www.cnblogs.com/vidudu/articles/KwooJan.html