Create a button with FLEX

flex 制作的按钮3D效果的，虽然是个例子，但是很炫很漂亮。button to create the 3D effect flex, though, is an example, but a shining very beautiful.-flex 按钮3D效果的例子，很炫。button to create the 3D effect flex, though, is an example, but a shining very beautiful.