Move header to the center

Hi,

I’m trying to figure out for days now how to move my header title to the center, but can’t figure it out. I’m using the Adelle theme by blu chic

my site is gingerandaloe.com

I combed through the forum to find the answer myself, but nothing worked.

This is what I have in my style sheet right now:

.headerh1 {
margin-left:20px;
}

Thanks so much for any help!