html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #f5f7fa;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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