title: Spaces between button in Ant Design
body: <p>In <a href="https://github.com/ant-design/ant-design" rel="noreferrer">https://github.com/ant-design/ant-design</a>, how it the recommend method of adding spacing (margin) between buttons?</p>
  
  <p>In semantic-ui, default margins defined within the library CSS. In bootstrap, one can use button groups to add spacing between buttons.</p>
  
  <p>Is adding custom css or inline css the recommended way of achieving margins between buttons? Ideally, I want avoid writing any css when using a css framework</p>