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.
Duplicate ID “Calque_1”.
Duplicate ID “d”.
Duplicate ID “a”.
Duplicate ID “a_1_”.
Duplicate ID “b”.
Duplicate ID “b_1_”.
Duplicate ID “c”.
Duplicate ID “c_1_”.
Duplicate ID “d_1_”.
Duplicate ID “a_2_”.
Duplicate ID “a_3_”.
Duplicate ID “b_2_”.
Duplicate ID “b_3_”.
Duplicate ID “c_2_”.
Duplicate ID “c_3_”.
Duplicate ID “e”.
Duplicate ID “d_2_”.
Duplicate ID “a_4_”.
Duplicate ID “a_5_”.
Duplicate ID “b_4_”.
Duplicate ID “b_5_”.
Duplicate ID “c_4_”.
Duplicate ID “c_5_”.
Duplicate ID “d_3_”.
Duplicate ID “a_6_”.
Duplicate ID “a_7_”.
Duplicate ID “b_6_”.
Duplicate ID “b_7_”.
Duplicate ID “c_6_”.
Duplicate ID “c_7_”.
Duplicate ID “d_4_”.
Duplicate ID “a_8_”.
Duplicate ID “a_9_”.
Duplicate ID “b_8_”.
Duplicate ID “b_9_”.
Duplicate ID “c_8_”.
Duplicate ID “c_9_”.
Duplicate ID “d_5_”.
Duplicate ID “a_10_”.
Duplicate ID “a_11_”.
Duplicate ID “b_10_”.
Duplicate ID “b_11_”.
Duplicate ID “c_10_”.
Duplicate ID “c_11_”.
Duplicate ID “e_1_”.
Duplicate ID “d_6_”.
Duplicate ID “a_12_”.
Duplicate ID “a_13_”.
Duplicate ID “b_12_”.
Duplicate ID “b_13_”.
Duplicate ID “c_12_”.
Duplicate ID “c_13_”.
Duplicate ID “f”.
Duplicate ID “f_1_”.
Duplicate ID “f_2_”.
Duplicate ID “f_3_”.
Duplicate ID “f_4_”.
Duplicate ID “black_stripe”.
Duplicate ID “red_stripe”.
Duplicate ID “gold_stripe”.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Stray end tag “div”.
Stray end tag “nav”.
Duplicate ID “ac-svg-path”.
The “center” element is obsolete. Use CSS instead.
Stray end tag “strong”.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Stray end tag “section”.
Duplicate ID “number_link”.
Bad value “tel:Lines closed+441704325069” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
End tag “nav” seen, but there were open elements.
Unclosed element “ul”.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Warnings:
The first occurrence of ID “Calque_1” was here.
The first occurrence of ID “d” was here.
The first occurrence of ID “a” was here.
The first occurrence of ID “a_1_” was here.
The first occurrence of ID “b” was here.
The first occurrence of ID “b_1_” was here.
The first occurrence of ID “c” was here.
The first occurrence of ID “c_1_” was here.
The first occurrence of ID “d_1_” was here.
The first occurrence of ID “a_2_” was here.
The first occurrence of ID “a_3_” was here.
The first occurrence of ID “b_2_” was here.
The first occurrence of ID “b_3_” was here.
The first occurrence of ID “c_2_” was here.
The first occurrence of ID “c_3_” was here.
The first occurrence of ID “e” was here.
The first occurrence of ID “d_2_” was here.
The first occurrence of ID “a_4_” was here.
The first occurrence of ID “a_5_” was here.
The first occurrence of ID “b_4_” was here.
The first occurrence of ID “b_5_” was here.
The first occurrence of ID “c_4_” was here.
The first occurrence of ID “c_5_” was here.
The first occurrence of ID “d_3_” was here.
The first occurrence of ID “a_6_” was here.
The first occurrence of ID “a_7_” was here.
The first occurrence of ID “b_6_” was here.
The first occurrence of ID “b_7_” was here.
The first occurrence of ID “c_6_” was here.
The first occurrence of ID “c_7_” was here.
The first occurrence of ID “d_4_” was here.
The first occurrence of ID “a_8_” was here.
The first occurrence of ID “a_9_” was here.
The first occurrence of ID “b_8_” was here.
The first occurrence of ID “b_9_” was here.
The first occurrence of ID “c_8_” was here.
The first occurrence of ID “c_9_” was here.
The first occurrence of ID “d_5_” was here.
The first occurrence of ID “a_10_” was here.
The first occurrence of ID “a_11_” was here.
The first occurrence of ID “b_10_” was here.
The first occurrence of ID “b_11_” was here.
The first occurrence of ID “c_10_” was here.
The first occurrence of ID “c_11_” was here.
The first occurrence of ID “e_1_” was here.
The first occurrence of ID “d_6_” was here.
The first occurrence of ID “a_12_” was here.
The first occurrence of ID “a_13_” was here.
The first occurrence of ID “b_12_” was here.
The first occurrence of ID “b_13_” was here.
The first occurrence of ID “c_12_” was here.
The first occurrence of ID “c_13_” was here.
The first occurrence of ID “f” was here.
The first occurrence of ID “f_1_” was here.
The first occurrence of ID “f_2_” was here.
The first occurrence of ID “f_3_” was here.
The first occurrence of ID “f_4_” was here.
The first occurrence of ID “black_stripe” was here.
The first occurrence of ID “red_stripe” was here.
The first occurrence of ID “gold_stripe” was here.
The first occurrence of ID “ac-svg-path” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “number_link” was here.
Empty heading.