:root {
    --light-blue: #00BFF3;
    --blue: #2D7ED9;
    --dark-blue: #0054A8;
    --orange: #E98104;
    --bg: lightgray;
    --fg: black;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: black;
        --fg: white;
    }
}

html {
    font-family: 'Courier New', Courier, monospace;
    font-size: 16px;
    background-color: var(--bg);
    color: var(--fg);
}

h1 {
    color: var(--dark-blue);
}

h2, h3 {
    color: var(--light-blue);
}

h4, h5, h6 {
    color: var(--blue);
}

body {
    margin: 0.5em 1em;
}

table {
    border-collapse: collapse;
    margin-bottom: 1em;
}

tr {
    margin: 0;
    padding: 0;
}

td, th {
    margin: 0;
    padding: 0.5em 1em;
    text-align: left;
    border: 1px solid var(--fg);
}

div {
    margin: 10px;
}

input, button, fieldset {
    margin-bottom: 10px;
}

@media screen and (orientation:landscape) {
    .flexy {
        display: flex;
        flex-direction: row;
    }
}

@media screen and (orientation:portrait) {
    .flexy {
        display: flex;
        flex-direction: column;
    }
}