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+# 吊顶规范
+
+- order: 3
+
+吊顶一般用于跨系统/应用场景，可以放置统一的登录/帮助信息。
+
+吊顶背景深色，高度 `30px`，和浅色调的主导航配合使用。
+
+---
+
+````jsx
+import { Menu, Breadcrumb } from 'antd';
+
+ReactDOM.render(
+  <BrowserDemo>
+    <div className="ant-layout-ceiling-demo">
+      <div className="ant-layout-ceiling">
+        <div className="ant-layout-wrapper">
+          <ul className="right">
+            <li>xxx@example.com</li>
+            <li>|</li>
+            <li>帮助中心</li>
+            <li>|</li>
+            <li>客服/投诉电话：400-826-7710</li>
+          </ul>
+        </div>
+      </div>
+      <div className="ant-layout-header">
+        <div className="ant-layout-wrapper">
+          <div className="ant-layout-logo"></div>
+        </div>
+      </div>
+    </div>
+  </BrowserDemo>
+, document.getElementById('spec-layout-demo-ceiling'));
+````
+
+````css
+.ant-layout-ceiling-demo {
+  height: 100%;
+}
+
+.ant-layout-ceiling {
+  font-size: 12px;
+  height: 30px;
+  line-height: 30px;
+  background-color: #242736;
+  color: #ddd;
+}
+
+.ant-layout-ceiling .right {
+  float: right;
+}
+
+.ant-layout-ceiling ul li {
+  display: inline-block;
+  margin: 0 4px;
+}
+
+.ant-layout-ceiling-demo .ant-layout-wrapper {
+  padding: 0 50px;
+}
+
+.ant-layout-ceiling-demo .ant-layout-header {
+  background: #fff;
+  height: 64px;
+  border-bottom: 1px solid #d9d9d9;
+}
+
+.ant-layout-ceiling-demo .ant-layout-logo {
+  width: 120px;
+  height: 32px;
+  background: #eee;
+  border-radius: 6px;
+  margin: 16px 28px 16px 0;
+  float: left;
+}
+````