How to get dark navbar site wide

Entrada WP Theme
#1

If you would like Dark Navbar for all pages including the parallax header pages, please go to Appearance >> Customize >> Custom CSS and JS >> Custom CSS box and add the CSS code below inside your Custom CSS box.

#header {
background: #252525;
border-bottom: 1px solid #181818;
}

.default-page #header {
background: #252525;
border-bottom: 1px solid #181818;
}

Thank You