Is it possible to center align a text box?

Is it possible to center align a text box (the object, not the text within it) rather than it always being aligned to the left of the page?

Is there some custom CSS that I could use for this?

I have previously done this by setting the width of the box and then changing the margin it's aligned against but this isn't really suitable for my uses.

Hi,

First of all, I would like to recommend you to shrink the text box. You can shrink it by clicking on "Properties" and then going to the "Advanced" tab. 

Then please find the ID of the field on the same page by clicking on the "Field Details" button:

Finally, please inject this custom CSS code to your form. Please don't forget to change the field ID. You can also change the value of the margin according to your own preference:

#input_22 {

margin-left: 85%;  

}

How to Inject Custom CSS Codes

The result:

Please send us further details such as the form URL etc. if you cannot succeed this way.

Thank you.

All the best!