Errors:
A document must not include more than one “meta” element with a “charset” attribute.
Bad value “https://fonts.googleapis.com/css?family=Crimson+Text:600,600italic,400italic,400|IM+Fell+English+SC” 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.
Bad value “/search?rarity[]=rare” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/search?rarity[]=mythic” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/search?type[]=enchantment” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/search?type[]=planeswalker” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/search?groups[]=favorites” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
End tag “h5” seen, but there were open elements.
The element “main” must not appear as a descendant of the “aside” element.
End tag “div” seen, but there were open elements.
Unclosed element “main”.
Stray end tag “main”.
Unclosed element “aside”.
Stray end tag “aside”.
Stray end tag “div”.
Warnings:
The “navigation” role is unnecessary for element “nav”.
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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