使用Photoshop导出为Gif格式是经常出现讨厌的杂边，特别是在网页设计时，那些杂边显得非常刺眼。
经过多日的实验找到一种不错的方法，通过“图像->模式->索引颜色”。
再次导出之后一切都不一样了。
Using Photoshop to export Gif format is often the Matte annoying, especially in web design, those Matte very dazzling.
After several days of experiments to find a good way, “Image -> Mode -> Indexed Color.”
Re-export everything is different.