drinks-manager/app/static/css/simple-keyboard_dark.css

.simple-keyboard.darkTheme.numeric {
    width: 13rem;
}
.simple-keyboard.darkTheme {
    width: 50rem;
    max-width: 100%;
    background: transparent;
}
.simple-keyboard.darkTheme .hg-button {
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-color);
    color: white;
    border: none;
    border-bottom: 1px solid var(--border-color);
}
.simple-keyboard.darkTheme .hg-button:active,
.simple-keyboard.darkTheme .hg-button:hover {
    color: white;
    background: var(--bg-hover-color);
}