fix resizing width/height: 100% problem on GTK
fix resizing width/height: 100% problem on GTK

r0x0r/pywebview,shivaprsdv/pywebview,r0x0r/pywebview,r0x0r/pywebview,r0x0r/pywebview,shivaprsdv/pywebview,shivaprsdv/pywebview,shivaprsdv/pywebview,r0x0r/pywebview