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New posts in w3c-validation

How to add non-standard attributes in a valid way

javascript html validation w3c-validation

Attribute data-ls not allowed on element svg at this point. how to rectify it

html svg w3c w3c-validation svg-animate

W3C Validation Failed, Illegal character in path segment: space is not allowed

html css w3c-validation

Is it acceptable for a submit button to have a name attribute?

html coding-style standards w3c-validation

Why won't <iframe> elements validate in HTML 4.01?

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@media queries : getting an error in W3C CSS Validation Service

css xhtml media w3c-validation media-queries

W3C validator complaining about duplicate div

html w3c-validation

HTML Tables: Semantics of empty cells

html html-table semantic-markup w3c-validation

Ampersands in hyperlinks cause W3C validation to fail

html validation web-standards w3c-validation

Does w3c standards allow for same z-indexes

html css z-index w3c w3c-validation

Why would you need a "Valid XHTML & CSS" notice at the end of a page

html css user-interface standards-compliance w3c-validation

SVG and CSS properties in the same file

css svg w3c-validation

Remove frameborder attribute on the iframe of Recaptcha

javascript html iframe recaptcha w3c-validation

W3C validator error: Attribute placeholder is only allowed when the input type is

html placeholder w3c-validation html-input

Bad value pagination for attribute role on element nav

html w3c w3c-validation wai-aria

W3C error validating - Bad value for attribute href on element a: Illegal character in query: not a URL code point

html w3c-validation

W3C Validation: Attribute alt not allowed on element a at this point

html w3c-validation

How can I validate CSS on internal web pages?

css linux validation java w3c-validation

HTML5 Validation error with select required attribute

html-select w3c-validation
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