#nav a  { 
  /* border: 1px solid #ccc; */
  background: transparent; 
  text-decoration: none; 
  margin: 0 5px 6px; 
  padding: 0 5px;
  display:inline;
    }
    

#nav a:focus {
  outline: none;
  }

#nav a:hover img.thumb-line {
 border:1px dotted #00B0D8; 
}