@media screen and (min-width: 480px){
  
  /*********************
  TWO COLUMN LAYOUT
  *********************/
  
  #primary{
    width:50%;
    float: left;
    padding-right: 10px;
  }
  
  #secondary{
    width: 45%;
    float: right;
  }
 
  #third{
    width:100%;
    padding-top:20px;
    clear:left;
  }
 
  /*********************
  PAGE: PORTFOLIO
  *********************/
  
  #gallery li{
    width: 28.3333%
   }
  
  #gallery li:nth-child(4n) { /*styling is applied to every 4th list item*/
    clear:left;
  }
  
  
  
  /*********************
  PAGE: ABOUT
  *********************/
  
  .profile-photo{
    float: left;
    margin: 0 2% 1% 0;
  }
  
  
  
}
@media screen and (min-width: 660px){
  
/*********************
  HEADER
  *********************/
  nav{
    background: none;
    float: right;
    font-size: 1em;
    margin-right: 0%;
    text-align: right;
    width: 55%;
  }
  
  /* nav link */
  nav a, nav a:visited{
    color: #bbe0e8
  }
  
  /* selected nav link */
  nav a.selected, nav a:hover{
    color: #095d89;
  }
  
  #logo{
    float: left;
    margin-left: 0%;
    text-align: left;
    width: 40%;
  }
  
  h1{
    font-size: 2.5em;
  }
  
  h2{
    font-size: 0.8em;
    margin-bottom: 20px;
  }
  
  header{
    border-bottom: 5px solid #f1f1f1;
    margin-bottom: 60px;
  }
}