diff --git a/src/skins/vector/css/matrix-react-sdk/structures/SearchBox.css b/src/skins/vector/css/matrix-react-sdk/structures/SearchBox.css
new file mode 100644
index 0000000000..77c8e54fea
--- /dev/null
+++ b/src/skins/vector/css/matrix-react-sdk/structures/SearchBox.css
@@ -0,0 +1,48 @@
+/*
+Copyright 2015, 2016 OpenMarket Ltd
+
+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_SearchBox {
+    height: 24px;
+    margin-left: 20px;
+    margin-right: 20px;
+    padding-top: 23px;
+    padding-bottom: 23px;
+    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
+
+    display: flex;
+    display: -webkit-flex;
+}
+
+.mx_SearchBox_searchButton {
+    margin-right: 10px;
+}
+
+.mx_SearchBox_search {
+    flex: 1;
+    -webkit-flex: 1;
+    font-size: 12px;
+    height: 24px;
+    vertical-align: middle;
+}
+
+.mx_SearchBox_searchPlaceholder {
+    opacity: 0.5;
+}
+
+.mx_SearchBox_minimise,
+.mx_SearchBox_maximise {
+    margin-left: 10px;
+}