html{
    max-width: 100vw;
    overflow-x: hidden;
}

body{
    margin: 0;
    padding: 0;
}

.cert-container{
    padding: 0;
}

.cert{
    position: relative;
    width: 800px;
    height: 600px;
    padding: 0;
    margin: 0;
}

.cert img{
    -webkit-box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.52);
    -moz-box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.52);
    box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.52);
}

#qrcode img{
    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none;
}

@media (max-width: 770px) {
    body{
        height: 100dvh;
    }
}