how to give a definite size to an object

[Mariasol]

object size
I cannot give a specific size to an object, for example a layer that I would like to be round
I obviously set the radius to 100
but if the object is 62px /67 px how to render a size of 67/67 px?
I can't do it with the mouse and in the html object I can't change the size either.
how to give a definite size to an object?
Thank you for your help

[Pablo]

You can set the size via the Property Inspector
https://www.wysiwygwebbuilder.com/introduction.html

[Mariasol]

Thanks a lot !