Why can't a div be a child of a label?

Question

HTML

Please tell me what is wrong here?

<div class="lfloat half" style="line-height: 40px;">
<label for="remember" class="options_left enh_checkbox chk_container">
<input type="checkbox" name="remember" id="remember" class="inline noborder" tabindex="3"/>
<span>{$lng.remember_me_rormatted}</span>
<div class="chk_indicator"></div>
</label>
</div>

Error: Element div not allowed as child of element label in this context. (Suppressing further errors from this subtree.)

Answer 1

Because according to the standard label has a Phrasing content model, and can only contain a certain set of tags (excluding nested label)

Answer 2

label is an inline element and div is a block element. Generally, block-level elements inside inline elements are not allowed. Although there are some points, for example, the validator does not swear on the div inside the link.