root.css

html {
    font-family:
        system-ui,
        /* macOS 10.11-10.12 */
        -apple-system,
        /* Windows 6+ */
        "Segoe UI",
        /* Android 4+ */
        "Roboto",
        /* Ubuntu 10.10+ */
        "Ubuntu",
        /* Gnome 3+ */
        "Cantarell",
        /* KDE Plasma 5+ */
        "Noto Sans",
        /* fallback */
        sans-serif,
        /* macOS emoji */
        "Apple Color Emoji",
        /* Windows emoji */
        "Segoe UI Emoji",
        /* Windows emoji */
        "Segoe UI Symbol",
        /* Linux emoji */
        "Noto Color Emoji";
    scrollbar-face-color: #646464;
    scrollbar-base-color: #646464;
    scrollbar-3dlight-color: #646464;
    scrollbar-highlight-color: #646464;
    scrollbar-track-color: #000;
    scrollbar-arrow-color: #000;
    scrollbar-shadow-color: #646464;
    scrollbar-dark-shadow-color: #866a6a;
}

::-webkit-scrollbar {
    width: 14px;
    height: 3px;
}

::-webkit-scrollbar-button {
    background-color: #000;
    height: 3px;
}

::-webkit-scrollbar-track {
    background-color: #646464;
}

::-webkit-scrollbar-track-piece {
    background-color: #000;
}

::-webkit-scrollbar-thumb {
    height: 50px;
    background-color: #666;
    border-radius: 7px;
}

::-webkit-scrollbar-corner {
    background-color: #646464;
}

::-webkit-resizer {
    background-color: #666;
}

:root {
    --highlight-color: #978141;
}

.flex {
    display: flex !important;
}


body {
    color: #fff;
    background-color: #0f0f0f;
    font-family: "Montserrat", sans-serif;
    background: #0f0f0f;
    width: 100%;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

h1 {
    font-family: 'Roboto', sans-serif;
    font-size: 100px;
}

h2 {
    font-family: 'Roboto', sans-serif;
    font-size: 80px;
    text-shadow: -2px -2px #313233;
}

h3 {
    font-family: 'Roboto', sans-serif;
    font-size: 65px;
}

h4 {
    font-family: 'Roboto', sans-serif;
    font-size: 40px;
}

p.subtitle {
    font-family: 'Roboto', sans-serif;
    font-size: 30px;
}

a {
    color: inherit;
}

footer {
    font-family: 'Open Sans', sans-serif;
    position: fixed;
    left: 10px;
    bottom: 10px;
    width: 100%;
}

@media (max-width: 1680px) {
    html {
        font-size: 13pt;
    }
}

@media (max-width: 1280px) {
    html {
        font-size: 13pt;
    }
}

@media (max-width: 980px) {
    html {
        font-size: 11pt;
    }
}

@media (max-width: 736px) {
    html {
        font-size: 11pt;
    }
}