:root {
        --col-brown-main: rgba(98,79,68,1);
        --col-bg-top: rgba(47,40,34,1) ;
        --col-bg-middle: rgba(83,71,60,1);
    }
    * {
        padding: 0;
        margin: 0;
        font-family: sans-serif;
    }
    ul {
        padding-left: 20px;
        margin-bottom: 20px;
        font-size: 1.3em;
    }
    li {
        padding-bottom: 10px;
    }
    body {
        background: var(--col-brown-main);
        background: linear-gradient(180deg, var(--col-bg-top) 0%, var(--col-bg-middle) 10%, var(--col-brown-main) 25%);
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }
    #page {
        width: 900px;
        max-width: 100%;
        margin: 0 auto;
        flex: 1 0 auto;
        padding-bottom: 16px;
    }
    #video-wrapper {
        position: relative;
        width: 100%;
        padding-bottom: 56.25%;
        height: 0;
    }
    #video-wrapper iframe {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
    }
    img {
        max-width: 100%;
        height: auto;
    }
    #img-book-cover, #img-location {
        display: block;
        margin: 0 auto;
    }
    #img-book-cover, #img-location, #youtubeFrame {
        filter: drop-shadow(rgba(0,0,0,0.5) 0px 0px 10px);
    }
    footer {
        width: 100%;
        text-align: center;
        font-size: 0.7em;
        margin-top: auto;
        padding-top: 8px;
        padding-bottom: 8px;
        background-color: black;
        color: white;
    }
    a {
        color: rgba(193,125,89,1);
    }
    a:hover {
        color: rgba(193,125,89,0.7);
    }
    h1 {
        color: white;
        font-size: 2.0em;
        padding-top: 25px;
        padding-bottom: 30px;
        filter: drop-shadow(rgba(0,0,0,1.0) 0px 0px 4px);
        text-align: center;
    }
    h2 {
        color: white;
        filter: drop-shadow(rgba(0,0,0,0.8) 0px 0px 3px);
        margin-top: 14px;
        margin-bottom: 14px;
        font-size: 1.5em;
    }
    .header-prefix {
        font-size: 0.8em;
    }
    .sidebyside {
        display: flex;
        align-items: flex-start;
        gap: 24px;
    }
    .sidebyside ul {
        flex: 1;
        margin-bottom: 0;
    }
    .sidebyside img {
        flex: 0 0 auto;
    }
    @media (max-width: 700px) {
        .sidebyside {
            flex-direction: column;
        }
        .sidebyside ul {
            margin-bottom: 20px;
        }
    }