Thanks Both
The 20% background didnt work with the commas in the RGB values, but it did work without. Anyway, i have updated it after reading your link
So i now have this which seems to work OK
#sp-header {
background: rgba(82, 82, 82, 0.2); !important;
color: rgb(255, 255, 255) !important;
}
#sp-header.header-sticky {
background: rgb(255, 255, 255) !important;
color: rgb(82, 82, 82) !important;
}
#sp-header.header-sticky .sp-megamenu-parent > li > a {
color: #525252 !important;
}
Thanks for your help.
I am very new to writing this code, and not very good I am afraid :(