Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
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 “//fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,300italic,700,400,300|Oxygen:300,400” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “logo”.
Duplicate ID “left”.
Duplicate ID “right”.
Duplicate attribute “class”.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Bad value “1000px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “__bkframe” for attribute “name” on element “iframe”: Browsing context name started with the underscore.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The first occurrence of ID “logo” was here.
The first occurrence of ID “left” was here.
The first occurrence of ID “right” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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