@supports ((-webkit-backdrop-filter: initial) or (backdrop-filter: initial))
.localnav.localnav-sticking .localnav-background {
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    background-color: rgba(255,255,255,0.72);
}
.localnav.localnav-sticking .localnav-background {
    background-color: rgba(255,255,255,0.9);
    transition: background-color 0.5s cubic-bezier(0.28, 0.11, 0.32, 1);
    transition-property: background-color, -webkit-backdrop-filter;
    transition-property: background-color, backdrop-filter;
    transition-property: background-color, backdrop-filter, -webkit-backdrop-filter;
}
@supports ((-webkit-backdrop-filter: initial) or (backdrop-filter: initial))
.localnav.localnav-scrim .localnav-background {
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    background-color: rgba(255,255,255,0.72);
}