CSS

CSS = '\n    NotificationSettingsScreen {\n        align: center middle;\n        background: transparent;\n    }\n\n    NotificationSettingsScreen > VerticalGroup {\n        width: 65;\n        max-width: 90%;\n        height: auto;\n        max-height: 80%;\n        background: $surface;\n        border: solid $primary;\n        padding: 1 2;\n    }\n\n    NotificationSettingsScreen .ns-title {\n        text-style: bold;\n        color: $primary;\n        text-align: center;\n        margin-bottom: 1;\n    }\n\n    NotificationSettingsScreen .ns-help {\n        height: 1;\n        color: $text-muted;\n        text-style: italic;\n        margin-top: 1;\n        text-align: center;\n    }\n\n    NotificationSettingsScreen Checkbox {\n        margin: 0;\n        border: none;\n        &:focus {\n            border: none;\n        }\n    }\n    '