Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “venues-slider” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Errors:
Bad value “it_IT” for attribute “lang” on element “a”: The language subtag “it_it” is not a valid language subtag.
Bad value “en_US” for attribute “lang” on element “a”: The language subtag “en_us” is not a valid language subtag.
Bad value “es_ES” for attribute “lang” on element “a”: The language subtag “es_es” is not a valid language subtag.
Bad value “de_DE” for attribute “lang” on element “a”: The language subtag “de_de” is not a valid language subtag.
Bad value “pt_PT” for attribute “lang” on element “a”: The language subtag “pt_pt” is not a valid language subtag.
Bad value “fr_FR” for attribute “lang” on element “a”: The language subtag “fr_fr” is not a valid language subtag.
No space between attributes.
Duplicate ID “venues-slider”.
Bad value “/paintings/Adorazione dei Magi - Gentile da Fabriano.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Adorazione dei Magi.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Adorazione dei Magi-Leonardo.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Adorazione dei Magi-Durer.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Adorazione del bambino.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Autoritratto giovanile.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Battaglia di San Romano.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Battesimo di Cristo.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Cena in Emmaus.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Dama col petrarchino.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Incoronazione della Vergine.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Incoronazione della Vergine-Angelico.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Ritratto Leone X.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Madonna col bambino e angeli.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Sant'Anna Metterza.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Madonna dal collo lungo.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Madonna del Cardellino.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Madonna del Magnificat.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Madonna del popolo.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Madonna delle Arpie.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Madonna in trono tra otto angeli.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Martirio di Santa Giustina.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Morte di Adone.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Nascita di Venere.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Pala dello Spedalingo.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Pallade e il centauro.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Perseo libera Andromeda.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Presentazione di Gesu al tempio.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Prova di Mose.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Putto che suona.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Ritorno di Giuditta a Betulia.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Doppio ritratto dei duchi di Urbino.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Ritratto Durer il Vecchio.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Ritratto di Cosimo Il Vecchio.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Ritratto di Eleonora di Toledo.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Francesco delle Opere.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Sacra Famiglia Panciatichi.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Sacrificio di Isacco.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Scoperta del cadavere di Oloferne.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Tondo Doni.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Trittico Mantegna.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Uomo con la lettera.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/paintings/Venere di Urbino.jpg.ashx?mode=crop&width=400&height=220&quality=50” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
The “clear” attribute on the “br” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)