p {font-size: 0.9em; }
strong {font-size: 1.5em; } 

div.content {
  position:absolute;
  left:160px;
  top:150px;
  width:600px;
  background-color: solid #ffcc00;
  padding-left: 0.5em;
  padding-right: 0.5em;
  
}

p.changed {
    padding-left: 0.5em;
    border-left: none;
    border-right: none;
    border-top: none;
    border-bottom: none;
    border-color: none;
  }