html, body {
    font: 13pt arial;
}
div.container {
    width: 100%;
    border: 1px solid gray;
}

header, footer {
    clear: left;
    text-align: center;
    color: white;
    background-color: rgb(69, 97, 167);
}
header {
    padding: 0.8em;
}
footer {
    padding: 0.1em;
}
section, article {display: block;}
section, article {float: left;}
section, article {margin: 5px; width: 1000px; overflow: hidden;}
nav ul li {
    display: inline;
    margin: 5px;
}
aside {
    float: left;
    max-width: 600px;
    margin: 0;
    padding: 1em;
}