body {
    background: url(../images/background.png) center center no-repeat;
    background-size: 100%;
    margin: 0;
    height: 100vh;
    width: 100vw;
}

.download {
    display: flex;
    justify-content: center;
    flex-direction: row;
    align-items: center;
    position: fixed;
    width: 100%;
    bottom: 30px;
}

.android,
.ios {
    max-width: 200px;
    width: 50%;
}

.android img,
.ios img {
    width: 100%;
}

@media (max-device-width: 730px) {
    body {
        background: url(../images/bg.png) center center no-repeat;
        background-size: 100%;
        margin: 0;
        height: 100vh;
        width: 100vw;
    }
}

@media (max-device-width: 440px) {
    body {
        background-size: cover;
    }
    .download {
        display: flex;
        justify-content: space-between;
        flex-direction: column;
        align-items: center;
        position: fixed;
        width: 100%;
        bottom: 100px;
    }
    .android,
    .ios {
        max-width: 400px;
        width: 50%;
    }
}