Şu hataların sebeplerini tam olarak anlayamadım, sebeplerini açıklar mısınız?

1- Error: The element button must not appear as a descendant of the a element.
"="_blank"><button class="cookie-bar-more_info ">Detayl"

2- Error: Bad value true for attribute checked on element input.
"sent"><input id="wp-comment-cookies-consent" name="wp-comment-cookies-consent" type="checkbox" checked="true" value="yes" /><label for"

3- Error: Element style not allowed as child of element div in this context. (Suppressing further errors from this subtree.)
"ayout-12"><style>/* Oze"
Contexts in which element style may be used:Where metadata content is expected.In a noscript element that is a child of a head element.Content model for element div:If the element is a child of a dl element: one or more dt elements followed by one or more dd elements, optionally intermixed with script-supporting elements.If the element is not a child of a dl element: flow content.