How to change whole template dimensions??

I would strongly suggest that you consider creating a child theme for your changes.

You can change the dimension of your blog very easily by modifying the values of width and height in your style.css file.

thx I will try to do it..:D

I wanna ask you something…
Which part of style.css i have to chage..
to change height and width??
because there are so many of information..
my theme is graphene..
greets