Errors:
Internal encoding declaration “iso-8859-1” disagrees with the actual encoding of the document (“utf-8”).
Bad value “text/html; charset=iso-8859-1” for attribute “content” on element “meta”: “iso-8859-1” is not a preferred encoding name. The preferred label for this encoding is “windows-1252”.
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”.
Duplicate ID “deck-8740870”.
Duplicate ID “deck-8252034”.
Duplicate ID “deck-8737763”.
Duplicate ID “deck-8772478”.
Bad value “true” for attribute “allowfullscreen” on element “iframe”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
Bad value “popover” for attribute “rel” on element “a”: The string “popover” is not a registered keyword.
Character reference expands to a control character (U+001b).
Warnings:
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “deck-8740870” was here.
The first occurrence of ID “deck-8252034” was here.
The first occurrence of ID “deck-8737763” was here.
The first occurrence of ID “deck-8772478” was here.
United States US