about moving labels closer to coordinate in 3D plotting

Hi Everyone,
I have a problem trying to set the X and Y label closer to the coordinate. I have ax.xaxis.set_ticks_position('top'),ax.yaxis.set_ticks_position('top') so that the ticks are close to the coordinate. As for the labels, I have tried



but neither seems to move the labels closer, is there any way to move it closer to the coordinates?



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