html,
body {
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: #000;
  text-align:center;
  color:#fff;
  font-family:sans;
}


#holder{
    height:100%;
    width:100%;
    
}

#cnv{
    
    
}

#code{
    text-align:center;
    
    background-color: rgba(255,255,255,0.9);
    color: #000;
   
    font-size:1.2em;
    left:calc(50%-200px);
    top:10vh;
    width:90%;
}

#codeholder{
    text-align:center;
    width:100%;
}

#holder2
{
    margin: auto;
    background-color: rgba(0,0,0,1);
    color: #fff;
    height: 88px;
    font-size:0.8em;
    
    padding-top:8px;
}

@media only screen and (min-width: 380px) {
    #holder2
    {
        width: 380px;
        font-size:1em;
        padding:8px;
    }
}