Finish splitting up components

src/index.css

@@ -1,3 +1,19 @@
+/*
+Copyright 2021 New Vector 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.
+*/
+
 body {
   background-color: #333;
   color: #fff;
@@ -31,4 +47,24 @@ a {
 
 a:hover, a:active {
   color: rgb(76, 134, 173);
-}
+}
+
+.page {
+  margin: 0 auto;
+  max-width: 960px;
+  display: flex;
+  flex-direction: column;
+  padding: 0 20px;
+}
+
+.page input {
+  padding: 8px 4px;
+  font-size: 16px;
+  border-radius: 4px;
+  border: 1px solid #888;
+}
+
+.page input, .page button {
+  display: block;
+  margin-top: 16px;
+}