:root {
    color-scheme: light dark;
    --header-bg-color: #666;
    --header-txt-color: white;
    --page-bg-color: #FFF;
}

@media (prefers-color-scheme: dark) {
    :root {
        --header-bg-color: #333;
        --header-txt-color: #eee;
        --page-bg-color: #222;
    }
}

@media print {
    nav {
        display: none;
    }
}

* {
    box-sizing: border-box; 
}

body {
    display: flex;
    min-height: 100vh;
    flex-direction: row;
    margin: 0;
    font-family: sans-serif;
    background: var(--page-bg-color);
}
.col-1 {
    background: var(--header-bg-color);
    flex: 1;
    min-width: 10em;
}
.col-2 {
    display: flex;
    flex-direction: column;
    flex: 5;
}
.content {
    display: flex;
    flex-direction: row;
    background: none;
}
.content > article {
    flex: 4;
    min-height: 60vh;
    /*    max-width: 70vw;*/
    padding-right: 10vw;
}

header, footer {    
}
main {
    padding: 0;
}
header, footer, article, nav {
    padding: 1em;
}

nav h1 {
    font-family: "MS Trebuchet";
    font-size: 1em;
}

nav a {
    color: #CCC;
    text-decoration: none;

}

a.currentPage {
    color: #CCC;
    font-weight: bold;
}
nav a:hover {
    color: #FFF;
}
nav ul {
    list-style-type: none;
    padding: 0;
}
nav li {
    margin: 10px;
}
.col-2 > * {
    margin-left: 20px;
    margin-right: 20px;
}
header {
    padding-top: 2em;
    font-family: Helvertica, Arial;
}
article {
    padding-top: 0;
}