Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
CSS: “vector-effect”: Property “vector-effect” doesn't exist.
CSS: “transition”: “0” is not a “transition” value.
CSS: Unknown pseudo-element or pseudo-class “:first”
CSS: “align-items”: “left” is not a “align-items” value.
CSS: “transition”: “0.6” is not a “transition” value.
CSS: “align-items”: “middle” is not a “align-items” value.
CSS: “background-color”: “none” is not a “background-color” value.
CSS: “font-size”: Parse Error.
No space between attributes.
Bad value “--small” for attribute “media” on element “source”: Expected “(” or letter at start of a media query part but saw “-” instead.
Element “source” is missing required attribute “srcset”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “--medium” for attribute “media” on element “source”: Expected “(” or letter at start of a media query part but saw “-” instead.
The element “button” must not appear as a descendant of the “a” element.
Duplicate ID “js_placeholder--duimodal”.
Attribute “x” not allowed on element “symbol” at this point.
Attribute “y” not allowed on element “symbol” at this point.
End tag “symbol” did not match the name of the current open element (“path”).
Duplicate ID “iconset-search”.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “js_placeholder--duimodal” was here.
The first occurrence of ID “iconset-search” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in Hungarian but the “html” start tag has “lang="en-US"”. Consider using “lang="hu"” (or variant) instead.
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