Center ListBox1 Header / Columns Xojo Web

I’m new to Xojo / Xojo Web. Struggling with trying to figure out how to align my ListBox1 column headers.

I apply a default WebStyle (which you have to create) to the whole of the WebListBox e.g. CentredListStyle, then in the Open event change any individual columns away from default e.g. my WebListBox.ColumnStyle(3) = LeftAlignedStyle (you have to create a style called LeftAlignedStyle)