For one, you probably want to add some kind of background to the text -- the large text for the story bits is readable -- but eg: http://www.storystak.com/about is unreadable.

Perhaps something along the lines of:

  #content {
    color: white;
    margin: 0.5%;
    padding-top: 2.5%;
    padding-bottom: 2.5%;

    border-radius:10px;
    background: #fff; /* fallback for browsers that don't understand rgba */
    background-color: rgba(255,255,255,0.4)/* transparent white */
  }

See also eg: http://stackoverflow.com/questions/4855348/how-can-i-make-di...