body {
    margin: 0;
    padding: 0;
    color: rgba(255, 255, 255, 0.87);
    background-color: #222222;
    
    background-image: url(./images/background.svg);
    background-size: 100% 100%;
    -o-background-size: 100% 100%;
    -webkit-background-size: 100% 100%;
    background-size: cover;
}

#app {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}
#app #container {
    /*width: 1920px;
    height: 1080px;*/
    width: 640px;
    height: 480px;
    min-width: 640px;
    min-height: 480px;
    overflow: hidden;
}