editor.min.css (269B)
1 .wp-block-group .block-editor-block-list__insertion-point{left:0;right:0}[data-type="core/group"].is-selected .block-list-appender{margin-left:0;margin-right:0}[data-type="core/group"].is-selected .has-background .block-list-appender{margin-top:18px;margin-bottom:18px}