Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
CSS: “padding-buttom”: Property “padding-buttom” doesn't exist.
Stray start tag “html”.
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 both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “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”, “modulepreload”, “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.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No space between attributes.
Element “form” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
“td” start tag in table body.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
End tag “td” seen, but there were open elements.
Unclosed element “div”.
Element “style” not allowed as child of element “tr” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “my_centered_buttons”.
Element “li” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “li” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute “alt” not allowed on element “a” at this point.
No “p” element in scope but a “p” end tag seen.
Stray end tag “div”.
Row 2 of a row group established by a “tbody” element has no cells beginning on it.
Duplicate attribute “class”.
Element “li” not allowed as child of element “center” in this context. (Suppressing further errors from this subtree.)
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “tite” not allowed on element “a” at this point.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
Stray end tag “a”.
Stray end tag “td”.
Table columns in range 2…3 established by element “td” have no cells beginning in them.
End tag “span” seen, but there were open elements.
Unclosed element “a”.
No “a” element in scope but a “a” end tag seen.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
The “vspace” attribute on the “img” element is obsolete. Use CSS instead.
Garbage after “</”.
Element “style” not allowed as child of element “center” in this context. (Suppressing further errors from this subtree.)
CSS: “background-color”: “none” is not a “background-color” value.
A “script” element with an “integrity” attribute must not have a “type” attribute with the value “module”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “center”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “charset” attribute on the “script” element is obsolete.
The first occurrence of ID “my_centered_buttons” was here.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
A table row was 0 columns wide, which is less than the column count established by the first row (4).
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Module scripts are not supported in most browsers yet.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Thailand TH