/*Structure*/
#main-header{
    background-color: darkkhaki;
}
#main-content{
    background-color: darkslategrey;
    padding: 5px;
    width: 75%;
    margin: auto;
}
#main-footer{
    background-color: darkslategrey;
    padding: 5px;
}
.col1of2{
    background-color: antiquewhite;
}
.column{
    padding:5px;
    margin: 5px;
    border-radius: 2px;
}

.col10f3, 
.col2of3 {
    background-color: seagreen;
}
.col1of4, .col2of4{
    background-color: pink;
}

/*Navigation*/
#main-nav ul{
    padding-left: 0;
}
#main-nav li{
    list-style-type: none;
    padding: 5px;
    background-color: cadetblue;
    border-bottom: 1px solid grey;
}
#main-nav a{
    text-decoration: none;
    color: black;
}
img{
    padding: 15px;
    margin-right: auto;
    border: 15px solid;
    border-radius: 5px;
}


/*Typography*/
body{
    font-family: Arial, Helvetica, sans-serif;
}
#main-header h1{
    text-align: center;
}
#main-content h2{
    color: white;
}
#main-footer p{
    text-align: center;
    color: white;
}

/*Larger Resolutions*/
@media (min-width: 900px){
    #main-nav ul, 
    .flex-container{
        display: flex;
    }
    #main-nav li, 
    .col1of2
    .col10f3
    .col1of4 {
        flex:1;
    }
    .col2of3
    .col2of4 {
        flex:2;
    }   
}