Add blurry header same as Apple

[nxjus]

Hello, we want our header to have the same blurry effect as Apples website.

This are the specific changes:

background-color: rgba(255, 255, 255, 0.9);
backdrop-filter: saturate(180%) blur(20%);

site: cultureposter.com (password: poster)

Thank You so much!

[CustomService]

Change the logo to a transparent background and remove the corresponding background color. I hope this helps.