Use the Outer glow option to add a very slight grey border, adjusting the Spread to the Max will turn the default glow into a solid strip of colour which helps add this doublestroke effect.
继续用外发光来添加一个浅灰色的边,调整扩展值到最大这样我们可以得到一个双边线效果。
2
Now Add a Drop Shadow, Inner Shadow, and Stroke layer styles to your rounded rectangle layer (double-click on the layer in the Layers Panel to open up the layer style dialog box).