The gradient itself was fine, but the button's symmetric 24px padding put the label too close to the fade zone on its seam side (a short word like "Fly" left little room). Bumped padding to 38 on that side only, leaving the outer side untouched.
The gradient itself was fine, but the button's symmetric 24px padding put the label too close to the fade zone on its seam side (a short word like "Fly" left little room). Bumped padding to 38 on that side only, leaving the outer side untouched.