Hi Ellen,
You can use this custom CSS to limit the header height
header#sleeky_header {
height: 70px;
}
And you would also want to adjust the menu items and logo padding accordingly to make them vertically centered:
ul.navmenu > li > a {
padding: 0.5rem 1rem;
}
h1#sleeky_site_title {
padding: 0.5rem 0rem;
}
regards
Imre