* {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
}

body {
    width: 100vw;
    height: calc(var(--vh, 1vh) * 100);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    background: url(../images/background_pc.png) no-repeat center #666;
    background-size: cover;
}

header {
    width: 100%;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 2rem;
    box-sizing: border-box;
}

header .logo {
    flex: 1;
}

header .logo img {
    height: 5vw;
}

header .contact-container {
    display: flex;
    flex-direction: row;
    align-items: center;
}

header .contact-container a {
    display: block;
    margin-left: 2rem;
}

header .contact-container a img {
    height: 3vw;
}

section {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

section .content-container {
    margin-left: 2rem;
}

section .content-container img {
    height: 8vw;
}

section .qrcode-container {
    margin-left: 2rem;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: row;
    align-items: center;
}

section .qrcode-container .qrcode {
    text-align: center;
    margin-right: 1rem;
}

section .qrcode-container .qrcode #code {
    padding: 5px;
    background-color: white;
    margin-bottom: 10px;
    box-sizing: border-box;
}

section .qrcode-container .qrcode #code canvas {
    vertical-align: middle;
}

section .qrcode-container .downloads {
    display: flex;
    flex-direction: column;
}

section .qrcode-container .downloads a {
    margin-bottom: 1rem;
}

section .qrcode-container .downloads a img {
    height: 3vw;
}

footer {
    width: 100vw;
    text-align: center;
}

footer .download-container {
    display: none;
}

.spinner-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
}

.spinner {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 9px solid;
    border-color: rgba(0, 0, 0, 0.5);
    border-right-color: #6183fc;
    -webkit-animation: spinner-zp9dbg 1s infinite linear;
    animation: spinner-zp9dbg 1s infinite linear;
}

@-webkit-keyframes spinner-zp9dbg {
    to {
        -webkit-transform: rotate(1turn);
        transform: rotate(1turn);
    }
}

@keyframes spinner-zp9dbg {
    to {
        -webkit-transform: rotate(1turn);
        transform: rotate(1turn);
    }
}

@media screen and (max-width: 768px) {
    body {
        background-image: url(../images/background.png);
    }

    header {
        padding: 1rem;
    }

    header .logo img {
        height: 14vw;
    }

    header .contact-container a {
        margin-left: 1rem;
    }

    header .contact-container a img {
        height: 12.5vw;
    }

    section {
        flex: 1;
        justify-content: end;
    }

    section .content-container {
        margin-left: 1rem;
        padding-bottom: 1rem;
    }

    section .content-container img {
        height: 50vw;
    }

    section .qrcode-container {
        display: none;
    }

    footer .tips-container img {
        height: 10vw;
    }

    footer .download-container {
        display: flex;
        flex-direction: row;
        text-align: center;
        padding: 1rem 0;
    }

    footer .download-container a {
        width: 50%;
        display: block;
    }

    footer .download-container a img {
        width: 95%;
    }
}

@media screen and (max-width: 480px) {}