The Text Box widget works in a very similar way to the Text widget. This widget uses some specific settings that are described below. Note that generic widget settings are described on the Widget Generic Settings page, so if you cannot find the setting you are looking for check there too.
Message Background Color
Choose a background color for the text box message.
Set the padding for the text box message by typing in the boxes or using the arrow buttons.
Choose the alignment for the text box message.