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.
Internal encoding declaration specified “utf-16” which is not an ASCII superset. Continuing as if the encoding had been “utf-8”.
Bad value “text/html; charset=utf-16” for attribute “content” on element “meta”: “utf-16” is not a preferred encoding name. The preferred label for this encoding is “utf-16le”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
The “marginwidth” attribute on the “body” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “body” element is obsolete. Use CSS instead.
Attribute “name” not allowed on element “div” at this point.
The “center” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “font” element is obsolete. Use CSS instead.
Attribute “stye” not allowed on element “div” at this point.
Bad value “http://” for attribute “href” on element “a”: Invalid host: empty host.
Attribute “alt” not allowed on element “a” at this point.
Attribute “alt” not allowed on element “div” at this point.
Element “text” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “cellpadding” attribute on the “table” element is obsolete.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The “cellspacing” attribute on the “table” element is obsolete.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The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
Duplicate ID “btn”.
Stray start tag “script”.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The first occurrence of ID “btn” was here.
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