better-xcloud/src/assets/css/root.styl

button_color(name, normal, hover, active, disabled)
    prefix = unquote('--bx-' + name + '-button');
    {prefix + '-color'}: normal;
    {prefix + '-rgb'}: red(normal), green(normal), blue(normal);

    {prefix + '-hover-color'}: hover;
    {prefix + '-hover-rgb'}: red(hover), green(hover), blue(hover);

    {prefix + '-active-color'}: active;
    {prefix + '-active-rgb'}: red(active), green(active), blue(active);

    {prefix + '-disabled-color'}: disabled;
    {prefix + '-disabled-rgb'}: red(disabled), green(disabled), blue(disabled);


:root {
    --bx-title-font: Bahnschrift, Arial, Helvetica, sans-serif;
    --bx-title-font-semibold: Bahnschrift Semibold, Arial, Helvetica, sans-serif;
    --bx-normal-font: "Segoe UI", Arial, Helvetica, sans-serif;
    --bx-monospaced-font: Consolas, "Courier New", Courier, monospace;
    --bx-promptfont-font: promptfont;

    --bx-button-height: 40px;

    button_color('default', #2d3036, #515863, #222428, #8e8e8e);
    button_color('primary', #008746, #04b358, #044e2a, #448262);
    button_color('warning', #c16e04, #fa9005, #965603, #a2816c);
    button_color('danger', #c10404, #e61d1d, #a26c6c, #df5656);

    --bx-fullscreen-text-z-index: 9999;
    --bx-toast-z-index: 6000;
    --bx-key-binding-dialog-z-index: 5010;
    --bx-key-binding-dialog-overlay-z-index: 5000;

    --bx-stats-bar-z-index: 4010;

    --bx-navigation-dialog-z-index: 3010;
    --bx-navigation-dialog-overlay-z-index: 3000;

    --bx-mkb-pointer-lock-msg-z-index: 2000;

    --bx-game-bar-z-index: 1000;
    --bx-screenshot-animation-z-index: 200;
    --bx-wait-time-box-z-index: 100;
}

@font-face {
    font-family: 'promptfont';
    src: url('https://redphx.github.io/better-xcloud/fonts/promptfont.otf');
}

/* Fix Stream menu buttons not hiding */
div[class^=HUDButton-module__hiddenContainer] ~ div:not([class^=HUDButton-module__hiddenContainer]) {
    opacity: 0;
    pointer-events: none !important;
    position: absolute;
    top: -9999px;
    left: -9999px;
}

/* Remove the "Cloud Gaming" text in header when the screen is too small */
@media screen and (max-width: 640px) {
    header a[href="/play"] {
        display: none;
    }
}

.bx-full-width {
    width: 100% !important;
}

.bx-full-height {
    height: 100% !important;
}

.bx-no-scroll {
    overflow: hidden !important;
}

.bx-hide-scroll-bar {
    scrollbar-width: none;

    &::-webkit-scrollbar {
        display: none;
    }
}

.bx-gone {
    display: none !important;
}

.bx-offscreen {
    position: absolute !important;
    top: -9999px !important;
    left: -9999px !important;
    visibility: hidden !important;
}

.bx-hidden {
    visibility: hidden !important;
}

.bx-invisible {
    opacity: 0;
}

.bx-unclickable {
    pointer-events: none;
}

.bx-pixel {
    width: 1px !important;
    height: 1px !important;
}

.bx-no-margin {
    margin: 0 !important;
}

.bx-no-padding {
    padding: 0 !important;
}

.bx-prompt {
    font-family: var(--bx-promptfont-font) !important;
}

.bx-line-through {
    text-decoration: line-through !important;
}

.bx-normal-case {
    text-transform: none !important;
}

.bx-normal-link {
    text-transform: none !important;
    text-align: left !important;
    font-weight: 400 !important;
    font-family: var(--bx-normal-font) !important;
}

select[multiple], select[multiple]:focus {
    overflow: auto;

    option {
        padding: 4px;

        &:checked, {
            color = var(--bx-primary-button-color);
            background: color linear-gradient(0deg, color 0%, color 100%);
        }
    }
}

/* Hide UI elements */
#headerArea, #uhfSkipToMain, .uhf-footer {
    display: none;
}

div[class*=NotFocusedDialog] {
    position: absolute !important;
    top: -9999px !important;
    left: -9999px !important;
    width: 0px !important;
    height: 0px !important;
}

#game-stream video:not([src]) {
    visibility: hidden;
}

/* Hide Controller icon in Game tiles */
div[class*=SupportedInputsBadge] {
    &:not(:has(:nth-child(2))), svg:first-of-type {
        display: none;
    }
}


.bx-game-tile-wait-time {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    background: #0000008c;
    display: flex;
    border-radius: 4px 0 4px 0;
    align-items: center;
    padding: 4px 8px;

    svg {
        width: 14px;
        height: 16px;
        margin-right: 2px;
    }

    span {
        display: inline-block;
        height: 16px;
        line-height: 16px;
        font-size: 12px;
        font-weight: bold;
        margin-left: 2px;
    }
}


.bx-fullscreen-text {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: #000000cc;
    z-index: var(--bx-fullscreen-text-z-index);
    line-height: 100vh;
    color: #fff;
    text-align: center;
    font-weight: 400;
    font-family: var(--bx-normal-font);
    font-size: 1.3rem;
    user-select: none;
    -webkit-user-select: none;
}

/* Device Code page */
#root {
    section[class*=DeviceCodePage-module__page] {
        margin-left: 20px !important;
        margin-right: 20px !important;
        margin-top: 20px !important;
        max-width: 800px !important;
    }

    div[class*=DeviceCodePage-module__back] {
        display: none;
    }
}

.bx-blink-me {
  animation: bx-blinker 1s linear infinite;
}

@keyframes bx-blinker {
  100% {
    opacity: 0;
  }
}