Issue #2566771 by Cottser, mortendk, jstoller, LewisNyman, mdrummond, Gints Ērglis, sqndr, Chernous_dn, Manjit.Singh, axe312, emma.maria, davidhernandez, lauriii, jaxxed, akalata: [Voltron patch] Move all remaining *.theme.css to Classy

Issue #2489830 by cilefen, davidhernandez, dcmul, Adam Clarey, joshi.rohit100, rpayanm, sqndr, Cottser, lauriii: Improve theme compatibility error message

Issue #2349711 by lauriii, mortendk, sqndr, akalata, yannickoo, Manjit.Singh, Jolidog, b0unty, aliyakhan, LewisNyman: Remove all visual from stark

Issue #2485293 by MathieuSpil, Manjit.Singh, rudraram, prajaankit, LewisNyman, DeeLay, sqndr: Clean up tour.module.css

Issue #2443361 by joelpittet, Cottser, sqndr, lauriii, Manuel Garcia, Wim Leers: Remove theme_book_link, make book tree align with MenuLinkTree build

Revert "Issue #2486453 by LewisNyman, sqndr, heatherwoz, hylid, yoroy, Bojhan: Set maximum width on Seven"

This reverts commit a70a74fc.

Issue #2142653 by corbacho, sqndr, LewisNyman, floretan, BarisW, G-raph, JamesLefrère, lokapujya, LoMo, Outi: Change default logo filetype to .svg and add an SVG version of Druplicon

Issue #2375673 by DickJohnson, LewisNyman, lauriii, emma.maria, sqndr, Wim Leers, stephr: Split Bartik's CSS into SMACSS style components

Issue #1892006 by Outi, tompagabor, sqndr, BarisW, herom, skippednote, LewisNyman, vermario, frankbaele, criscom, kid_icarus, lauriii, jlyon, eporama: Include a print styling for Seven

Issue #1663166 by LewisNyman, Manuel Garcia, JamesLefrère, BarisW, sqndr, tompagabor: Clean up system admin css

Issue #1077578 by mgifford, mjohnq3, sqndr, zniki.ru, pwieck, rpayanm, Risse, visabhishek: [Followup] Convert bartiks page.tpl.php to HTML5

Issue #2329767 by lauriii, alexpott, Cottser, sqndr: Move table classes from preprocess to templates.

Issue #2234331 by mortendk, lauriii, LewisNyman, sqndr, rteijeiro, G-raph, amitgoyal: Fixed Change the body classes to follow Drupal 8 CSS standards.

Issue #2337379 by skippednote, BarisW, derjochenmeyer, herom, ChandeepKhosa, kiliweb, sqndr, Palashvijay4 | LewisNyman: Rename 'branding' to 'content-header'.

Issue #2228745 by Wim Leers, sqndr, nod_, undertext: Fixed Color module doesn't look for CSS files declared in a library.

Issue #2213583 by lauriii, sqndr, Crisz, herom, jamesquinton, esod, Rajendar Reddy, zserno, er.pushpinderrana, cs_shadow, amitgoyal | JayeshSolanki: Fixed Misaligned Icons in Drupal 8.x.

Issue #2307533 by sqndr, LewisNyman, kenyob, emma.maria | tkoleary: Fixed Insufficient space at page bottom.

Issue #2222049 by LewisNyman, Michael Hodge Jr, sqndr: Add a .csslintrc file that's in line with our CSS standards.

Issue #2309137 by longwave, sqndr | LewisNyman: Remove quotes from all background-image: url() properties.

Issue #2247049 by sqndr, herom, LewisNyman: Redesign password strength indicator so it's less fragile.

Issue #2033211 by jwilson3, LewisNyman, sqndr, tim.plunkett, JamesLefrère | yannickoo: Move Seven CSS files into css directory.

Issue #2289247 by lauriii, mgifford, sqndr | LewisNyman: Visually hide the table headers on the modules page.

Issue #662940 by rootwork, tim.plunkett, emclaughlin, sqndr, ogi: Fixed "Lucida Sans Unicode" may match ugly "Lucida Bright" instead of "Lucida Sans".

Issue #2152219 by joelpittet, mdrummond, rodrigoaguilera, sqndr, rteijeiro, InternetDevels, steveoliver, hussainweb, shanethehat, jenlampton, kpa, AnythonyR, EVIIILJ, kgoel, Cottser, dsdeiz, hanpersand: Convert theme_input() to Twig

Issue #1921044 by pakmanlh, Manuel Garcia, rteijeiro, dasjo, aboros, sqndr, LewisNyman: Align the styling of tool tips to be more consistent with Seven.

Issue #2075475 by sqndr, Oostie, meladawy, temaruk, LewisNyman: Theme with no screenshot causes CSS height issue.

Issue #2181527 by nod_, Wim Leers, sqndr: Contextual's toolbar toggle doesn't appear once the client-side cache is filled.