Errors:
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:fb” not allowed here.
Attribute “xmlns:website” not allowed here.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “bookmark” for attribute “role” on element “a”.
Text not allowed in element “optgroup” in this context.
Element “img” is missing required attribute “src”.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “i” not allowed on element “img” at this point.
Attribute “love” not allowed on element “img” at this point.
Attribute “how” not allowed on element “img” at this point.
Attribute “connected” not allowed on element “img” at this point.
Attribute “we” not allowed on element “img” at this point.
Attribute “can” not allowed on element “img” at this point.
Attribute “get” not allowed on element “img” at this point.
Attribute “to” not allowed on element “img” at this point.
Attribute “people” not allowed on element “img” at this point.
Attribute “even” not allowed on element “img” at this point.
Attribute “if” not allowed on element “img” at this point.
Attribute “they” not allowed on element “img” at this point.
Attribute “are” not allowed on element “img” at this point.
Attribute “thousands” not allowed on element “img” at this point.
Attribute “of” not allowed on element “img” at this point.
Attribute “kilometers” not allowed on element “img” at this point.
Attribute “away."” not allowed on element “img” at this point.
Attribute “-” not allowed on element “img” at this point.
Attribute “martina” not allowed on element “img” at this point.
Attribute “hestericová,” not allowed on element “img” at this point.
Attribute “@science_exercises.eu"” not allowed on element “img” at this point.
The element “header” must not appear as a descendant of the “footer” element.
Attribute “x-autocompletetype” not allowed on element “input” at this point.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Attribute with the local name “xmlns:website” is not serializable as XML 1.0.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Attribute “away."” is not serializable as XML 1.0.
Attribute “-” is not serializable as XML 1.0.
Attribute “hestericová,” is not serializable as XML 1.0.
Attribute “@science_exercises.eu"” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
United States US