валидность сайта. Помогите новичку

Info: The Content-Type was text/html. Using the HTML parser.

Info: Using the schema for HTML with SVG 1.1, MathML 3.0, RDFa 1.1, and ITS 2.0 support.

Warning: Element form does not need a role attribute.

From line 175, column 1; to line 175, column 80

↩<form role="search" method="get" id="searchform" action="http://мой домен.ru/">↩ <

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

From line 190, column 945; to line 190, column 967

orm></div><style type="text/css">.ya-pa

Contexts in which element style may be used:

If the scoped attribute is absent: where metadata content is expected.

If the scoped attribute is absent: in a noscript element that is a child of a head element.

If the scoped attribute is present: where flow content is expected, but before any other flow content other than inter-element whitespace and style elements, and not as the child of an element whose content model is transparent.

Content model for element div:

Flow content.

проверил на валидность сайт вот что показал

На сколько критична Ошибка?? подскажите в общих чертах, сильно не ругайтесь тока учусь. если у меня шанс исправить, помогите.