Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Element “dt” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “dd” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “welcome”.
Stray end tag “span”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “class”.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Attribute “type” not allowed on element “iframe” at this point.
Attribute “border” not allowed on element “iframe” at this point.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Stray end tag “a”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “welcome” was here.
Text run is not in Unicode Normalization Form C.
The “type” attribute is unnecessary for JavaScript resources.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Iran IR