Is It Correct to Place a Element Inside a Element? When styling a Bootstrap form, one might encounter issues related to nesting elements within the label tag. The initial approach, using a div inside the label with a "block" CSS class, raises concerns about the validity of such a structure. The HTML specification clearly states that a label element cannot contain a div element, as it specifies a content model that excludes block-level elements within inline elements. Phrasing content, which includes elements such as input, span, and button, is permitted within a label element. Therefore, the correct approach is to avoid placing a div element directly inside the label element. Instead, one should use appropriate HTML structure, such as the following: Email 登入後複製 This revised structure ensures proper nesting of elements and adheres to the HTML specification.