Allow options to cascade kicks/bans throughout spaces

res/css/views/spaces/_SpaceChildrenPicker.scss

@@ -0,0 +1,35 @@
+/*
+Copyright 2021 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.mx_SpaceChildrenPicker {
+    margin: 16px 0;
+
+    .mx_RadioButton + .mx_RadioButton {
+        margin-top: 16px;
+    }
+
+    .mx_SearchBox {
+        // To match the space around the title
+        margin: 0 0 15px 0;
+        flex-grow: 0;
+        border-radius: 8px;
+    }
+
+    .mx_SpaceChildrenPicker_noResults {
+        display: block;
+        margin-top: 24px;
+    }
+}