body{
    width: 100%;
    height: 100vh; 
    margin: 0;
    padding: 0;
}

#qrcode{
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: fit-content;
    height: 150px;
    display: flex;    
}

#qrcode .short{
    width: 3px;
    height: 100%;
    background-color: black;
}

#qrcode .space{
    width: 2.5px;
    height: 100%;
    background-color: white;
}

#qrcode .long{
    width: 5px;
    height: 100%;
    background-color: black;
}

#controls{
    position: fixed;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    max-width: 500px;
    width: 100%;
    bottom: 5;
}

#controls label{
    margin-bottom: 5px;
    width: calc(33% - 5px);
    display: flex;
    flex-direction: column;
}
#controls label input{
    width: 100%;
}