Adjust a stripe's size

You can change a stripe's size in the ways:

Horizontally - by going with your mouse cursor to the bottom corners on the stripe and wait for it to change to a double arrow pointing sideways. then just grab it and stretch it to make it wider.

Vertically - Mouse-over the blue line found at the bottom of the stripe. When the mouse cursor change to a double arrow, grab it and stretch it up or down.