Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Element “span” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “reka”.
Duplicate ID “elem_1”.
Duplicate ID “elem_2”.
Duplicate ID “elem_3”.
Duplicate ID “elem_4”.
Duplicate ID “elem_5”.
Duplicate ID “elem_6”.
Duplicate ID “elem_7”.
Duplicate ID “elem_8”.
Duplicate ID “inne_serwisy_label”.
Duplicate ID “sliders_left”.
Duplicate ID “sliders_right”.
Duplicate ID “sliders”.
Stray end tag “div”.
Element “figure” not allowed as child of element “h4” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “reka” was here.
The first occurrence of ID “elem_1” was here.
The first occurrence of ID “elem_2” was here.
The first occurrence of ID “elem_3” was here.
The first occurrence of ID “elem_4” was here.
The first occurrence of ID “elem_5” was here.
The first occurrence of ID “elem_6” was here.
The first occurrence of ID “elem_7” was here.
The first occurrence of ID “elem_8” was here.
The first occurrence of ID “inne_serwisy_label” was here.
The first occurrence of ID “sliders_left” was here.
The first occurrence of ID “sliders_right” was here.
The first occurrence of ID “sliders” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Poland PL