@font-face {
    font-family: "libertinus";
    src: url("/fonts/LibertinusMono.ttf") format("truetype");
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: "xanh";
    src: url("/fonts/XanhMono-Regular.ttf") format("truetype");
    font-weight: normal;
    font-style: normal;
}

a:link {
    color: royalblue;
    text-decoration: none;
}

a:visited {
    color: fuchsia;
    text-decoration: none;
}

a:hover {
    color: blue;
    text-decoration: none;
}

a:active {
    color: steelblue;
    text-decoration: none;
}

body {
    background-image: url("../resources/jellyfish.avif");
    background-attachment: fixed;
    background-position: center;
    background-size: 100vw auto;
    color: white;
    font-family: "xanh";
    text-shadow: 0.2em 0.2em 0.2em black;
}

button {
    font-family: inherit;
    box-shadow: 0.2em 0.2em 0.2em black;
}

iframe {
    background: transparent;
    border: none;
}

img {
    max-width: inherit;
    max-height: inherit;
}

h1 {
    font-style: Italic;
}

h2 {
    font-style: Italic;
}

p {
    white-space: normal;
}

.button-group {
    display: flex;
    flex-direction: row;
    flex: 1;
    gap: 10px;
    margin: 20px;
}

.button-group button {
    font-size: 130%;
    padding: 0.5em;
    white-space: nowrap;
}

.center-div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-top: 1vw;
}

.content-div {
    max-width: 40%;
    padding-left: 4vw;
    padding-right: 4vw;
    text-align: left;
    justify-content: center;
}