@media screen and (min-width: 480px) {
  
  /**************************************
  two column layout
  **************************************/
  
  #primary {
   width: 50%;
    float: left;
  }
  
  #secondary {
   width: 40%;
    float: right;
  }
  
  /**************************************
  3 * 5=15 for margins
  100% - 15% = 85%
  85%/3 = 28.333333333
  column layout
  **************************************/
  
  /**************************************
  Page Portfolio
  **************************************/  
  
  #gallery li {
   width: 28.3333%; 
  }
  
  #gallery li:nth-child(4n) {
   clear: left;
  }

  /**************************************
  Page Schedule
  **************************************/  


  
}

@media screen and (min-width: 660px) {
  
  /**************************************
  Header
  **************************************/    
  
  nav {
    background: none;
    float: right;
    font-size: 1.125em;
    margin-right: 5%;
    text-align: right;
    width: 45%
    
  }
  
  #logo {
   float: left;
    margin-left: 5%;
    text-align: left;
    width: 45%;
  }
  
  h1 {
    font-size: 2.5em;
  }
  
  h2 {
   font-size: 0.825em; 
    margin-bottom: 20px;
  }
  
  header {
   border-bottom: 5px solid #53AA59;
    margin-bottom: 60px;
    
  }
  

}