https://html.spec.whatwg.org/multipage/semantics-other.html#case-sensitivity-of-selectors: > Attribute selectors on an HTML element in an HTML document must treat the values of attributes with the following names as ASCII case-insensitive, with one exception as noted in the rendering section: > > - [...] > - type (except as specified in the rendering section) > - [...] The exception seems specific to user agent stylesheet. -- GitHub Notification of comment by cpplearner Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/2101#issuecomment-350701537 using your GitHub accountReceived on Monday, 11 December 2017 11:45:11 UTC
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