title: how can solve floating issues
body: <p>I use CSS to style aside. After applying this style, aside moves to left but I want it at the right of the page. I want aside to have a height that is relational to the container. i.e. I want its bottom margin to touch the top of the footer no matter what is the height of the container.</p>
  
  <p>Style:</p>
  
  <pre><code>aside {
  width:260px;
  float:right;
  border-left:1px dashed #aaa;
  padding-right:15px;
  padding-left:15px;
  text-align:center;
  position:absolute;
  overflow:auto;
  background-color:blue;
  border-radius:10px;
  box-shadow:0px 0px 7px rgba(0,0,0,0.5);
  }
  </code></pre>