* {
    margin: 0; padding: 0; bottom: 0; box-sizing: border-box;
}

body {
    background-color: #FFF;
    min-height: 100vh;
}

#container {
    border: 4px solid white;
    min-height: 100vh;
}

header {
    height: 80px;
    background-color: royalblue;
    padding: 9px;
}

#banner {
    width: 300px; height: 64px;
    background-color: rgba(255, 255, 255,.3);
}

main {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
}

main aside {
    background-color: #BF5700;
    min-height: 300px;
    flex: 0 0 200px;
    padding-bottom: 12px;
}

aside nav a {
    display: inline-block;
    width: 90%; height: 50px;
    background-color: #F5C59E;
    margin: 5% 5% 0 5%;
}

main article {
    background-color: white;
    min-height: 300px;
    flex: 1 0 0;
}

article .pretend_image {
    background-color: goldenrod;
    width: 250px; height: 250px;
    margin: 8px;
    float: left;
}

article p {
    font-family: verdana;
    margin: 8px;
    text-align: justify;
    font-size: 15pt;
    line-height: 1.5;
}

article header {
    background-color: #3A3;
}

@media screen and (max-width: 800px){
    #banner {
        width: 100%; 
    }
   
    main {
        flex-direction: column;
    }
    
    main aside {
        min-height: 80px; max-height: 80px;
        flex: 1 0 auto;
    }

    aside nav {
        display: flex;
    }

    aside nav a {
        height: 60px;
        margin: 8px;
    }

    aside nav a:nth-child(4),
    aside nav a:nth-child(5) {
        display: none;
    }
    
    main article {
        min-height: 500px;    
    }

    article header {
        margin-top: 8px;
    }

    article .pretend_image {
        width: 100%; height: 250px;
        margin: 8px 0 16px 0;
        float: left;
    }

    article p {
        margin: 8px 4px 20px 4px;
    }
}