title: Positioning a div near bottom side of another div
body: <p>I have outer div and inner div. I need to place inner div at the bottom of the outer one.</p>
  
  <p>Outer div is elastic (width: 70% for example). I also need to center inner block.  </p>
  
  <p>Simple model of described make-up is shown on the picture below: </p>
  
  <p><img src="https://i.stack.imgur.com/CJWr9.png" alt="enter image description here"></p>