_flow.css

html, body {
    height: 100%;
}

body {
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: black;
    font-size: 0;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    overflow: hidden;
}

#wrapper {
    display: block;
    position: relative;
}

.loading #wrapper {
    visibility: hidden;
}

#monitors {
    position: absolute;
    top: 0;
    left: 0;
}

#wrapper {
    width: 100vw;
    height: 75vw;
}

@media (min-aspect-ratio: 480/360) {
    #wrapper {
        height: 100vh;
        width: 133.33333333333334vh;
    }
}

#stage {
    width: 100%;
    height: 100%;
}

#loading-progress {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    border-radius: 20px;
    --progress: 0%;
    border: 1px solid #ffff00;
}

#loading-progress::before {
    content: attr(data-progress);
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #ffff00;
}

#loading-progress::after {
    content: '';
    display: block;
    height: 16px;
    border-radius: 20px;
    width: var(--progress);
    background-color: #ffff00;
}

.buttons {
    position: fixed;
    top: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.5);
    border-bottom-left-radius: 12px;
}

.buttons button {
    -webkit-appearance: none;
    border: none;
    background: none;
    width: 48px;
    height: 48px;
    cursor: pointer;
    background-repeat: no-repeat;
    background-position: center;
    background-size: 24px;
}

.buttons button:disabled {
    cursor: auto;
    opacity: 0.5;
}

#fullscreen-btn {
    background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48"%3E%3Cpath d="M14 28h-4v10h10v-4h-6v-6zm-4-8h4v-6h6v-4H10v10zm24 14h-6v4h10V28h-4v6zm-6-24v4h6v6h4V10H28z" fill="%23fff"/%3E%3C/svg%3E');
}

.fullscreen #fullscreen-btn {
    background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48"%3E%3Cpath d="M10 32h6v6h4V28H10v4zm6-16h-6v4h10V10h-4v6zm12 22h4v-6h6v-4H28v10zm4-22v-6h-4v10h10v-4h-6z" fill="%23fff"/%3E%3C/svg%3E');
}

.monitor {
    position: absolute;
    border: 1px solid transparent;
    border-color: rgba(0, 0, 0, 0.2);
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    overflow: hidden;
    padding: 3px;
    color: #ffffff;
    white-space: pre;
}

.monitor-label {
    margin: 0 5px;
    font-weight: bold;
}

.monitor-value {
    display: inline-block;
    vertical-align: top;
    min-width: 34px;
    text-align: center;
    border-radius: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    user-select: text;
    transform: translateZ(0);
}

.default .monitor-value, .slider .monitor-value {
    background-color: rgba(0, 0, 0, 0.5);
    margin: 0 5px;
    padding: 1px 3px;
}

.large {
    background-color: rgba(0, 0, 0, 0.6);
    padding: 0.1rem 0.25rem;
    min-width: 3rem;
}

.large .monitor-label {
    display: none;
}

.large .monitor-value {
    font-size: 1rem;
    width: 100%;
}

.list {
    padding: 0;
    overflow: auto;
    overflow-x: hidden;
}

.list .monitor-label {
    text-align: center;
    padding: 3px;
    width: 100%;
    display: block;
    margin: 0;
    box-sizing: border-box;
    white-space: pre-wrap;
}

.list .monitor-value {
    display: block;
}

.row {
    margin: 2px 5px;
    transform: translateZ(0);
    text-align: left;
    border-radius: 0.25rem;
    border: 1px solid transparent;
    border-color: rgba(0, 0, 0, 0.2);
    background-color: rgba(0, 0, 0, 0.5);
    height: 20px;
    line-height: 20px;
    padding: 0 5px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.slider input {
    display: block;
    width: 100%;
    transform: translateZ(0);
}

#asking-box {
    display: none;
    position: absolute;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: rgba(33, 33, 33, 0.7);
}

.asking #asking-box {
    display: block;
}

#question {
    display: block;
    margin: 0 10px;
    margin-top: 10px;
    font-size: 12px;
    color: white;
}

#answer {
    border: none;
    background: none;
    width: 100%;
    font: inherit;
    font-size: 16px;
    color: white;
    padding: 10px;
    box-sizing: border-box;
}

#answer:focus {
    outline: none;
}

#errors {
    -webkit-appearance: none;
    border: none;
    background: rgba(255, 0, 0, 0.7);
    color: white;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
}