title: bootstrap floating css/widget/parts
body: <p>I am searching for the boot strap floating css/widget/parts samples.</p>
  
  <p>I am googling around with some keyword like 'floating / fixed'  but only found sticky footer and header or some simple panel samples.</p>
  
  <p>What my 'floating' means , div stays on the same place of window regardress of scroll.</p>
  
  <p>like airbnb cacher panel.</p>
  
  <p>(sorry this screenshot is japanese)</p>
  
  <p><a href="https://i.stack.imgur.com/kg9tv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kg9tv.png" alt="enter image description here"></a></p>