Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “(min-width: 1200px) 165px, (min-width: 992px) 132px, (min-width: 768px) 95px, 17%” for attribute “sizes” on element “img”: Expected units (one of “em”, “ex”, “ch”, “rem”, “vw”, “vh”, “vmin”, “vmax”, “cm”, “mm”, “q”, “in”, “pc”, “pt”, “px”) but found “%” at “…n-width: 768px) 95px, 17%”.
Bad value “(min-width: 1200px) 360px, (min-width: 992px) 293px, (min-width: 768px) 220px, 33%” for attribute “sizes” on element “img”: Expected units (one of “em”, “ex”, “ch”, “rem”, “vw”, “vh”, “vmin”, “vmax”, “cm”, “mm”, “q”, “in”, “pc”, “pt”, “px”) but found “%” at “…-width: 768px) 220px, 33%”.
Bad value “(min-width: 1200px) 263px, (min-width: 992px) 213px, (min-width: 768px) 158px, 25%” for attribute “sizes” on element “img”: Expected units (one of “em”, “ex”, “ch”, “rem”, “vw”, “vh”, “vmin”, “vmax”, “cm”, “mm”, “q”, “in”, “pc”, “pt”, “px”) but found “%” at “…-width: 768px) 158px, 25%”.
Bad value “/event#158-Malle Mienen Toernooi 2018” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
Bad value “/event#154-Elfbierentocht (Campus Pubcrawl)” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
Bad value “/event#163-Merging man and technology: Lecture & Discussion with Stelarc” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
Bad value “/event#152-Epic Electric Superbike Reveal” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
Bad value “/event#147-Holi 2018 - The Festival of Colors” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “(min-width: 1200px) 555px, (min-width: 992px) 455px, (min-width: 768px) 345px, 50%” for attribute “sizes” on element “img”: Expected units (one of “em”, “ex”, “ch”, “rem”, “vw”, “vh”, “vmin”, “vmax”, “cm”, “mm”, “q”, “in”, “pc”, “pt”, “px”) but found “%” at “…-width: 768px) 345px, 50%”.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
Bad value “(min-width: 1200px) 263px, (min-width: 992px) 213px, (min-width: 768px) 158px, 50%” for attribute “sizes” on element “img”: Expected units (one of “em”, “ex”, “ch”, “rem”, “vw”, “vh”, “vmin”, “vmax”, “cm”, “mm”, “q”, “in”, “pc”, “pt”, “px”) but found “%” at “…-width: 768px) 158px, 50%”.
Element “option” without attribute “label” must not be empty.
Bad value “/files/Redactiestatuut U-Today NL.pdf” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Bad value “/files/Redactiestatuut U-Today EN.pdf” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Stray end tag “div”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “button” role is unnecessary for element “button”.
Netherlands NL