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Editorial Team
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Asked: 2026-05-22T21:06:30+00:00

i found this code via Google Developer Tools: <html xmlns=http://www.w3.org/1999/xhtml xml:lang=en lang=en class= js

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i found this code via Google Developer Tools:

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" class=" js canvas canvastext geolocation crosswindowmessaging websqldatabase no-indexeddb hashchange historymanagement draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow opacity cssanimations csscolumns cssgradients cssreflections csstransforms no-csstransforms3d csstransitions  video audio localstorage sessionstorage webworkers applicationcache svg smil svgclippaths no-opera no-mozilla webkit   fontface">
    </html>

and this code via html source code:

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> </html>

obviously these classes get generated with Javascript.
But Why? Why so many css classes for html root element?

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1 Answer

  1. Editorial Team

    These get generated by Modernizr, as a means to identify what features are available to a user’s browser.

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