QS:Time limit warning style
From LimeSurvey Manual
制限時間警告CSS (time_limit_warning_style)
説明
制限時間警告メッセージを表示するCSSを指定（既定のスタイルを上書き）します。指定しない場合は次の既定のスタイルが適用されます。'top: 10px; left: 35%; width: 30%; height: 60px; padding: 16px; border: 8px solid #555; background-color: white; z-index: 1001; text-align: center; overflow: auto'.
Any text entered into this attribute will overwrite the entire default css style for the warning message, so you should ensure that care is taken when entering a value for this attribute. It is strongly recommended that you re-use the z-index value, or that, at least, the z-index value be lower than that used for the time_limit_message_style attribute (which defaults to 1002).
This settings is only applicable if the general time limit setting is activated. This setting also exists for a second warning message.
Example
top: 10px; left: 35%; width: 30%; height: 60px; padding: 16px; border: 8px solid #555; background-color: gray; color: white; z-index: 1001; text-align: center; overflow: auto