Layout
<Layout>
<Header className="header">
<div className="logo" />
<Menu
....
....
>
<Menu.Item key="1">nav 1 </Menu.Item>
........
.......
</Menu>
</Header>
<Layout>
<Sider>
.....
.....
</Sider>
<Layout >
<Breadcrumb >
............
.............
</Breadcrumb>
<Content>
Content
</Content>
</Layout>
</Layout>
</Layout>