Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Element “object” is missing one or more of the following attributes: “data”, “type”.
The “codebase” attribute on the “object” element is obsolete. Use the “data” and “type” attributes to invoke plugins. To set a parameter with the name “codebase”, use the “param” element.
The “classid” attribute on the “object” element is obsolete. Use the “data” and “type” attributes to invoke plugins. To set a parameter with the name “classid”, use the “param” element.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “-1” for attribute “rel” on element “a”: The string “-1” is not a registered keyword.
Bad value “+1” for attribute “rel” on element “a”: The string “+1” is not a registered keyword.
Bad value “294px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.
Bad value “258px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “http://hdu.edu.vn/vi-vn/215/Nội dung tư vấn tuyển sinh/” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Bad value “http://hdu.edu.vn/vi-vn/214/Đề án TS 2018/” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Duplicate ID “ctl01_group”.
Duplicate ID “ctl01_hpHotCat”.
No space between attributes.
Duplicate attribute “-”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “xanh” not allowed on element “a” at this point.
Attribute “-” not allowed on element “a” at this point.
Attribute “sạch” not allowed on element “a” at this point.
Attribute “Đẹp""” not allowed on element “a” at this point.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
Attribute “boder” not allowed on element “img” at this point.
The “center” element is obsolete. Use CSS instead.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “ctl01_group” was here.
The first occurrence of ID “ctl01_hpHotCat” was here.
Attribute “-” is not serializable as XML 1.0.
Attribute “Đẹp""” is not serializable as XML 1.0.
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