.app-page {
    background: url(../img/app/appbg.jpg)center center no-repeat fixed;
}

.app-page h2 {
    color: var(--sub-colorC);
    padding-bottom: 1.2rem;
}

.link-area {
    text-align: center;
    margin: 1.5rem 0 1rem;
}

.qr-box {
    max-width: 200px;
    margin: 0 auto;
    display: block;
    box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
}

.qr-box img {
    width: 100%;
    background-color: #fff;
    padding: 20px;
    border-radius: 6px;
}

@media (max-width:576px) {
    .app-page h1 {
        font-size: 35px;
        padding-top: 1.5rem;
    }

    .app-page h2 {
        font-size: 30px;
    }

    .sampleimg {
        max-width: 280px;
        display: block;
        margin: 0 auto;
    }
}