Icis.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Element “input” with attribute “type” whose value is “button” must have non-empty attribute “value”.
Duplicate ID “right”.
Element “h3” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “headerSectionContainer headerLeftCol” for attribute “id” on element “div”: An ID must not contain whitespace.
Bad value “https://www.icisconference.com/worldbaseoils?cmpid=ILC|CONF|CH0BU-2018-1902-GLOBAL-carousel” for attribute “href” on element “a”: Illegal character in query: “|” is not allowed.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “mailto: feedback@icis.com?subject=Feedback on ICIS” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Duplicate ID “left”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
The first occurrence of ID “right” was here.
The first occurrence of ID “left” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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