Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “type=image/x-icon” for attribute “type” on element “link”: Expected a token character or “/” but saw “=” instead.
Bad value “screen, projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “mailto: info@optiworld.org;” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Stray end tag “i”.
Attribute “data” not allowed on element “li” at this point.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Element “input” is missing required attribute “alt”.
Duplicate ID “search”.
Element “option” without attribute “label” must not be empty.
Duplicate ID “advanced-search”.
Duplicate ID “eventType”.
Duplicate ID “year”.
Duplicate ID “eventContinent”.
Duplicate ID “yearend”.
Bad value “/uploaded_files/IODA Handbook Final For Posting on Website.pdf_2588_en.pdf” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
No “li” element in scope but a “li” end tag seen.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The element “label” must not appear as a descendant of the “a” element.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The first occurrence of ID “search” was here.
The first occurrence of ID “advanced-search” was here.
The first occurrence of ID “eventType” was here.
The first occurrence of ID “year” was here.
The first occurrence of ID “eventContinent” was here.
The first occurrence of ID “yearend” was here.
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
United States US