body.theme-dark {
    background: #181a1b;
    color: #eee;
}

.theme-dark body {
    background: #181a1b;
    color: #eee;
}

body.theme-light {
    background: #fff;
    color: #222;
}

.theme-light body {
    background: #fff;
    color: #222;
}

#elevChart {
    display: block;
    margin: 32px auto;
    background: var(--elev-bg, #fff);
    border-radius: 8px;
    box-shadow: 0 2px 12px #0002;
    width: 100%;
    height: 100%;
}

body.theme-dark #elevChart {
    background: #23272e;
}

body.theme-light #elevChart {
    background: #fff;
}