Resize a text bounding box

1. With a type tool active, select the text layer in the Composition panel to display the bounding box handles.
2. Position the pointer over a handle—the pointer turns into a double arrow —and do one of the following:

   • Drag to resize in one direction.

   • Shift-drag to maintain the proportion of the bounding box.

   • Ctrl-drag (Windows) or Command-drag (Mac OS) to scale from the center.

 community help (adobe.com)