For this, you could use an action hook in your child theme
If you look at your
header.php in your original graphene directory... You will notice different
<php do action(); ?>'s scattered throughout. Create a function in your child
functions.php file and add something like this...
For this, I named a function
josh_headercloud and a div id
Notice at the bottom the
add action. This is telling the function to first display the
do action( 'graphene_header' ) and then directly afterwards it will display the
do action ( 'josh_headercloud' ).
Lastly, use your child theme CSS positioning.. create an element, in my case
#headercloud (matching the div id), and assign it properties as needed for positioning.
This keeps everything in your child theme and there is no need to alter core files.
Good Luck :)