The standardization team is currently working on the Wikimedia User Interface style guide, where it will be a one-stop shop for all design resources and specs in the future. But for now, you can obtain these updated resources from the Design Resources section of our team's wiki https://www.mediawiki.org/wiki/Wikimedia_User_Interface .
It includes:
- UI elements for use by designers / others (Sketch https://www.dropbox.com/s/qg45uofd173mo62/MediawikiUI.sketch?dl=0 • how to use gif https://upload.wikimedia.org/wikipedia/commons/0/07/How_to_turn_pencil_and_paper_sketch_to_high_fidelity_mock_up_with_Sketch_app.gif ) and specs for developers (WMFLabs http://wikimedia-ui.wmflabs.org/ • LESS file https://github.com/munmay/WikimediaUI/blob/master/MW/custom-variables.less );
- Three ways of using our icon library -- SVG https://www.dropbox.com/sh/tn5jctp80x1q8sp/AAC3oZ7TbN26QK89rE6e_XdIa?dl=0 , SVG sprite https://wikimedia-ui.wmflabs.org/MW/icons.svg, and Icon font https://github.com/munmay/WikiFont.
We will keep updating this thread as more resources become available and updated.
-- mm