html,
body,
p,
ol,
ul,
li,
dl,
dt,
dd,
blockquote,
figure,
fieldset,
legend,
textarea,
pre,
iframe,
hr,
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    padding: 0
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 100%;
    font-weight: normal
}

ul {
    list-style: none
}

button,
input,
select {
    margin: 0
}

html {
    box-sizing: border-box
}

*,
*::before,
*::after {
    box-sizing: inherit
}

img,
video {
    height: auto;
    max-width: 100%
}

iframe {
    border: 0
}

table {
    border-collapse: collapse;
    border-spacing: 0
}

td,
th {
    padding: 0
}


:root {
    --bs-blue: #0d6efd;
    --bs-indigo: #6610f2;
    --bs-black: #000;
    --bs-white: #fff;
    --bs-gray: #6c757d;
    --bs-gray-dark: #343a40;
    --bs-gray-100: #f8f9fa;
    --bs-gray-200: #e9ecef;
    --bs-gray-300: #dee2e6;
    --bs-gray-400: #ced4da;
    --bs-gray-500: #adb5bd;
    --bs-gray-600: #6c757d;
    --bs-gray-700: #495057;
    --bs-gray-800: #343a40;
    --bs-gray-900: #212529;
    --bs-light: #f8f9fa;
    --bs-dark: #212529;
    --bs-font-monospace: "Noto Sans Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --doc-ptsize-max: 11pt;
    --bs-gutter-x: 0;
    --bs-gutter-y: 20px;

    --bg: var(--bs-light);
    --bg2: var(--bs-gray-200);
    --fg: var(--bs-black);
}

html {
    color: var(--fg);
    background-color: var(--bg);
    background-image: url('./bkgd.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    min-height: 100vh;
}

.container {
    margin-top: calc(var(--bs-gutter-y));
    margin-bottom: calc(var(--bs-gutter-y));
    margin-right: calc(-.5*var(--bs-gutter-x));
    margin-left: calc(-.5*var(--bs-gutter-x));
    flex-wrap: wrap;
    display: flex;
    line-height: 1.25;
    justify-content: center;
    width: 100%;
    flex: none;
}

.markup {
    font-size: min(2vw,var(--doc-ptsize-max));
    font-family: var(--bs-font-monospace);
}

a {
    color: var(--bs-blue);
    text-decoration: underline;
}

a:visited {
    color: var(--bs-indigo);
}

.h1 {
    font-weight: 700;
}

.h2 {
    font-weight: 600;
}

span.code {
    background-color: var(--bg2);
    padding: 3px 5px;
    border: 0.2px solid var(--bs-gray-400);
}

.textbox-image {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: auto;
    /* display: block; */
    z-index: 1000;
}