BetterDiscordApp-v2/client/src/styles/partials/modals/backdrop.scss

.bd-backdrop {
    position: fixed;
    right: 0px;
    left: 0px;
    top: 0px;
    bottom: 0px;
    background: #000;
    opacity: .85;
    padding: 20px;
    z-index: 9000;
    justify-content: center;

    animation: bd-backdropIn 0.22s ease;
    &.bd-backdropOut {
        animation: bd-backdropOut 0.22s ease;
    }
}