The first number (x) is the distance from the left border of the container; the second number (Y) is the distance from the upper border of the container area, measured in pixels.
第一个数字(X)是到容器左边界的距离，第二个数字(Y)是到容器区域上边界的距离，这些数字以像素为单位。
The first number (x) is the distance from the left border of the container; the second number (Y) is the distance from the upper border of the container area, measured in pixels.
第一个数字(X)是到容器左边界的距离，第二个数字(Y)是到容器区域上边界的距离，这些数字以像素为单位。
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