Question How to center viewport of scrollview ?

not sure how to do it and if I should do it by code or in the editor.

the viewport as it is now in runtime. it's position more ot the left side:



I can drag the viewport on the red and put it more or less manual in the center. but I want it to be automatic in the center.

this screenshot is after dragging the red with the mouse: and this is how I want it to be automatic, when running the game that it will be in the center.



this is the settings of the content: