@import 'mediawiki.ui/variables.less'; .ext-WikiEditor-twopanes-TwoPaneLayout { // stylelint-disable-next-line plugin/no-unsupported-browser-features display: flex; .ext-WikiEditor-twopanes-pane1 { border: 1px solid @colorGray12; border-width: 0 1px 0 0; // Offset by half the difference in padding and the UI affordance. // stylelint-disable-next-line plugin/no-unsupported-browser-features width: ~'calc( 50% - 9px )'; } .ext-WikiEditor-twopanes-pane2 { position: relative; border: 1px solid @colorGray12; border-width: 0 0 0 1px; flex: 1 1 0; padding: 0; display: flex; flex-direction: column; min-width: 248px; .ext-WikiEditor-realtimepreview-preview { overflow: auto; height: 100%; } } }