Issue #2674292 by starshaped, tim.clifford, sskt, nesta_, kostyashupenko, mukeshMukesh12, alamowo, ironkiat, emma.maria, Manjit.Singh, kiwimind, Cottser, phenaproxima, yoroy, AaronChristian: Remove styling of select elements (improves appearance in Firefox)

Issue #2524284 by Hubbs, Sabreena, Tony-Mac, AlviMurtaza, Aleksandar_P, Saphyel, aj2r, vulcanr, snehi, rashid_786, vijay.mayilsamy, bandanasharma, kapil17, ironkiat, yoroy, LewisNyman, leanderl, aliyakhan, xjm, emma.maria, jcventura, leanderl, sannastrand, marikaj: The spacing of the buttons in the preview bar is cramped on narrow screens

Issue #2090937 by darketaine, thpoul, Wim Leers, ironkiat, kostyashupenko, himanshugautam, Cottser, davidhernandez, Reinmar, Bojhan, tic2000, LewisNyman, emma.maria: Seven theme: style CKEditor-native dialogs to match Drupal-native dialogs

Issue #2407955 by dernetzjaeger, darketaine, stefan.r, ChuChuNaKu, ironkiat, LewisNyman, Cottser, wellme, mgifford, emma.maria: Clean up unused images in the Seven theme