Is Inside Block Acceptable? In HTML, the element is a block-level element, while the element is an inline element. Inline elements are designed to flow within the text, while block-level elements start on a new line and take up the full width of their container. According to the HTML specification, a element cannot contain a element. The phrasing content, which includes , is not allowed within a element unless it is the labeled control (e.g., an element). In the given code, the element is placed inside the element to avoid having to create an ID for each element. While it appears to work in some browsers, this is not considered valid HTML. The CSS rule display: block is used to make the element a block-level element. However, this does not change the inherent nature of the element as an inline element. The element within the is still semantically incorrect. It is recommended to use proper HTML semantics and avoid placing block-level elements inside inline elements. Instead, consider using a nested and combination to group related inputs.