UI: add simple cards for views

Author: addyosmani

server/layouts/partial.handlebars

@@ -1,6 +1,8 @@
 <style type="text/css">{{{inlineStyles}}}</style>
 
+<div class="card">
 {{{ body }}}
+<div>
 
 {{#each remoteScripts}}
 <script src="{{this}}" async></script>

src/styles/core.scss

@@ -16,6 +16,7 @@
  */
 
 @import 'core/_colors';
+@import 'core/_card';
 @import 'core/_core';
 @import 'core/_dialog';
 @import 'core/_side-nav';

src/styles/core/_card.scss

@@ -0,0 +1,27 @@
+/**
+ *
+ * Copyright 2015 Google Inc. All rights reserved.
+ *
+ * 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.
+ */
+
+.card {
+  padding: 16px;
+  position: relative;
+  position: relative;
+  box-sizing: border-box;
+  background: #fff;
+  border-radius: 2px;
+  margin: 16px;
+  box-shadow: 0 2px 2px 0 rgba(0,0,0,.14),0 3px 1px -2px rgba(0,0,0,.2),0 1px 5px 0 rgba(0,0,0,.12);
+}