@media screen and (min-width: 480px) {
  
  /***********************
  Two Column Layout
  ***********************/
  
  #primary {
    width: 50%;
    float: left;
  }
  
  #secondary {
    width: 40%;
    float: right;
  }
  
  /***********************
  Page: Portfolio
  ***********************/
  
  #gallery li {
    width: 28.3333%;
  }
  
  #gallery li:nth-child(3n+1) {
    clear: left;
  }
  
  /***********************
  Page: About
  ***********************/
  
  .profile-photo {
    float: left;
    margin: 0 5% 80px 0;
  
}

@media screen and (min-width: 660px) {
    
  /***********************
  Header
  ***********************/
    
  nav {
      background: none;
      float: right;
      font-size: 1.125em;
      margin-right: 5%;
      text-align: right;
      width: 75s%;
    }
    
  nav a.selected, nav a:hover {
      color: #2D7A38;
    }
    
  #logo {
      float: left;
      margin-left: 3%;
      text-align: left;
      width: 100%;
    }
    
  h1 {
      font-size: 2.5em;
      margin-bottom: 5px;
    }
    
  h2 {
      margin-top: -1em;
    }
    
  header {
      border-bottom: 5px solid #2D7A38;
      margin-bottom: 60px;
    }
      
    
    
}