The Vert. Alignment field lets you control the vertical placement of the contents within the current text box. Click the drop-down button and select from the following options:

Bottom Select this option if you want the contents to appear at the bottom of the text box.
Center Select this option if you want the contents to be centered between the top and bottom of the text box.
Top Select this option if you want the contents to appear at the top of the text box.