First we'll add a simple frame which is identical (except for the color) to the border we built in the previous example.

首先我们将添加一个和前面的示例中构建的边相同(只是颜色不同)的边框。

youdao

First we'll add a simple frame which is identical (except for the color) to the border we built in the previous example.

首先我们将添加一个和前面的示例中构建的边相同(只是颜色不同)的边框。

youdao