Hi Paulien,
To reduce the white space in the header Go to Appearance -> Theme Options -> Design Options Tab -> Custom CSS paste the following CSS code and Click on save all changes button:
.hgroup-wrap {
padding-bottom: 21px;
}
#site-logo {
margin-top: 12px;
}
.hgroup-right {
margin-top: 18px;
}
And sorry you can not place the menu above the header by easy way because it’s a new feature to be add in the theme.
You have to hire a developer for this.
Thank you for using our theme.