Errors:
Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
Start tag “head” seen but an element of the same type was already open.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Element “head” is missing a required instance of child element “title”.
Stray start tag “script”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray doctype.
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Attribute “charset” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “content”, “itemprop”, “property”.
A document must not include more than one “meta” element with a “charset” attribute.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Element “title” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Element “marquee” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “font” element is obsolete. Use CSS instead.
Bad value “true” for attribute “checked” on element “input”.
Bad value “tel: 0207 612 0500” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel:0207 612 0500” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute value missing.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “oneway”.
Bad value “” for attribute “name” on element “input”: Must not be empty.
Duplicate ID “return”.
Attribute “placeholder” is only allowed when the input type is “email”, “number”, “password”, “search”, “tel”, “text”, or “url”.
Duplicate ID “CabinClass”.
Duplicate ID “airline”.
Duplicate ID “chkIsDirect”.
Duplicate ID “depsub”.
Duplicate ID “addRoomsTaghtl”.
Duplicate ID “removeRoomsTaghtl”.
Duplicate ID “roomSelectionDonhtl”.
Duplicate ID “btnSearch”.
Duplicate ID “dvProgress_FS”.
Duplicate ID “dvNLMessage_FS”.
Duplicate ID “chkIsDirectneed”.
Duplicate ID “depchkcar”.
Duplicate ID “depflexicar”.
Duplicate ID “depsubcar”.
Duplicate ID “txtEmailFlightSerch”.
Stray end tag “div”.
Attribute “runat” not allowed on element “img” at this point.
“'” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Stray end tag “head”.
Element “span” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “oneway” was here.
The first occurrence of ID “return” was here.
The first occurrence of ID “CabinClass” was here.
The first occurrence of ID “airline” was here.
The first occurrence of ID “chkIsDirect” was here.
The first occurrence of ID “depsub” was here.
The first occurrence of ID “addRoomsTaghtl” was here.
The first occurrence of ID “removeRoomsTaghtl” was here.
The first occurrence of ID “roomSelectionDonhtl” was here.
The first occurrence of ID “btnSearch” was here.
The first occurrence of ID “dvProgress_FS” was here.
The first occurrence of ID “dvNLMessage_FS” was here.
The first occurrence of ID “chkIsDirectneed” was here.
The first occurrence of ID “depchkcar” was here.
The first occurrence of ID “depflexicar” was here.
The first occurrence of ID “depsubcar” was here.
The first occurrence of ID “txtEmailFlightSerch” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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