By "not align" the Proc output do you mean that the value of 1 for A does not appear in the left most position because of the OBS column in the output? If that is the case then add NOOBS to the Proc statement to remove the observation number.
It is always a good idea to show the result you get and what you expect/want for output.
Which output are you looking at? I don't think HTML destination supports CENTER/NOCENTER. Where would the CENTER be on a device that can infinite page width?
Try running your code twice.
When I run your code the first time, the title is left aligned, and the PROC PRINT output is in the center of the page. When I run the code again, making no modifications, both are on the left side of the page.
I could not tell you what, but something is going on with the initialization of the Results window.
Note- to reset the properties of your session, select the three bars & dots icon (it has a circle around it) in the upper right of SAS studio, then select "Reset SAS session".
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