.static-screen,
.pick-screen,
.confirm-screen,
.complete-screen,
.achievements-screen,
.success-screen,
.optin-screen,
.opt-in-screen,
.cards-screen,
.won-screen,
.reveal-screen,
.pre-reveal-screen,
.progress-screen,
.quiz-screen,
.question-screen,
.result-screen,
.scratch-screen,
.slot-screen,
.spin-screen {
    background: url(../images/background/mobile/bg.jpg) no-repeat;
    background-size: cover;
    background-position: center;
}

@media screen and (min-width: 684px) {
    .pick-screen,
    .confirm-screen,
    .complete-screen,
    .achievements-screen,
    .success-screen,
    .optin-screen,
    .opt-in-screen,
    .cards-screen,
    .won-screen,
    .reveal-screen,
    .pre-reveal-screen,
    .progress-screen,
    .quiz-screen,
    .question-screen,
    .result-screen,
    .scratch-screen,
    .slot-screen,
    .spin-screen {
        background: url(../images/background/tablet/bg.jpg) no-repeat;
        background-size: cover;
        background-position: center;
    }
}