Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “form” role is unnecessary for element “form”.
The first occurrence of ID “keyword[]” was here.
Errors:
Bad value “conference.php?dt=2018-07&place=Sharjah, UAE” for attribute “href” on element “a”: Illegal character in query: space 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 “conference.php?dt=2018-07&place=Krakow , Poland” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “conference.php?dt=2018-07&place=Krabi, Thailand” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “conference.php?dt=2018-07&place=Tokyo , Japan” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “conference.php?dt=2018-07&place=Osaka , Japan” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “conference.php?dt=2018-07&place=Madrid , Spain” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
The “center” element is obsolete. Use CSS instead.
The element “button” must not appear as a descendant of the “a” element.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “height” not allowed on element “table” at this point.
The “align” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
Duplicate ID “keyword[]”.
Bad value “footer” for attribute “role” on element “footer”.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
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