Warnings:
The “navigation” role is unnecessary for element “nav”.
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).
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
The “inputmode” attribute is not supported in all browsers. Please be sure to test, and consider using a polyfill.
The first occurrence of ID “currency-converter” was here.
Errors:
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
The “select” element cannot have more than one selected “option” descendant unless the “multiple” attribute is specified.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “true” for attribute “readonly” on element “input”.
Element “img” is missing required attribute “src”.
Duplicate ID “currency-converter”.
Bad value for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Angola AO