Where is my The Darkness?

Firefox Developer Tools report this CSS being applied to top-left logo, and it seems to work. Not sure if there is anything else that is missing.

.logo-small {
    filter: drop-shadow(1px 1px 1px #ddd) drop-shadow(-1px 1px 1px #ddd) drop-shadow(1px -1px 1px #ddd) drop-shadow(-1px -1px 1px #ddd);
}

.logo-big {
    filter: drop-shadow(1px 1px 1px #ddd) drop-shadow(-1px 1px 1px #ddd) drop-shadow(1px -1px 1px #ddd) drop-shadow(-1px -1px 1px #ddd);
}