Iosys.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “info-2018-03-01” was here.
The “charset” attribute on the “script” element is obsolete.
The first occurrence of ID “submit” was here.
The “type” attribute is unnecessary for JavaScript resources.
Errors:
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “info-2018-03-01”.
Stray end tag “span”.
Attribute “post” not allowed on element “form” at this point.
Attribute “step” not allowed on element “input” at this point.
Element “option” without attribute “label” must not be empty.
Duplicate ID “submit”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
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