* { box-sizing: border-box; }
 body { background-color: #90C7E3;
       color: #666666;
     font-family: Verdana, Arial, sans-serif;
     margin: 0;
}
#wrapper { background-color: #FFFFFF;
}
header { background-color: #002171;
         color: #FFFFFF;
     font-family: Georgia, serif;
     padding: 1em;
}
header a { text-decoration: none; }
header a:link       { color: #FFFFFF; }
header a:visited { color: #FFFFFF; }
header a:hover     { color: #90C7E3; }
h1 {  font-size: 1.5em;
     text-align: center;
}
h2 { color: #1976D2;
     font-family: Georgia, serif; 
}
h3 { font-family: Georgia, serif; }
nav { background-color: #FFF;
     font-size: 1.2em;
   text-align: center;
}
nav a { text-decoration: none; }
nav a:link       { color: #5C7FA3; }
nav a:visited { color: #344873; }
nav a:hover     { color: #A52A2A; }
nav ul { display: flex;
       flex-direction: column;
     list-style-type: none; 
       margin: 0;
     padding: 0; 
}
nav li { border-bottom: 1px solid #344873;
      padding: .5em 1em;
    width: 100%; 
}
main { display: block; 
      padding: 0 1em;
}
dt { color: #002171;
     font-weight: bold;
}
.resort { color: #1976D2;
          font-size: 1.2em;
}
#homehero { height: 300px;
            background-image: url(coast.jpg);
        background-repeat: no-repeat;
            background-size: 200% 100%; 
 }
#yurthero { height: 300px;
            background-image: url(yurt.jpg);
        background-repeat: no-repeat;
            background-size: 200% 100%; 
 }
#trailhero { height: 300px;
            background-image: url(trail.jpg);
        background-repeat: no-repeat;
            background-size: 200% 100%; 
}
#mobile  { display: inline; } 
#desktop { display: none; }
section {  padding-left: .5em;
    padding-right: .5em;
}     
footer { background-color: #FFF;
       font-size: .70em;
       font-style: italic;
     padding: 1em;
     text-align: center;
}
@media (min-width: 600px) { 
    h1 { font-size: 2em;
            letter-spacing: .25em;    }
    nav ul { flex-flow: row nowrap; 
           justify-content: space-around;
         padding-right: 2em; }
    nav li { border-bottom: none;
          width: 12em; }
    section { padding-left: 2em;
            padding-right: 2em; }
    #flow { display: flex; 
            flex-direction: row; }
    #mobile { display: none; }
    #desktop { display: inline; }
    #homehero, #yurthero, #trailhero { background-size: 100% 100%; }
}
@media (min-width: 1024px) { 
    body { background-image: 
    linear-gradient(to bottom, #FFFFFF 20%, #90C7E3 60%, #FFFFFF 100%);
      }
    nav ul { padding-left: 10%;
             padding-right: 10%; }
    #wrapper { margin: auto;
               width: 80%; }  
}