div.modal_outer{
    background-color: rgba(0, 0, 0, 0.3);
    position: fixed;
    inset: 0;
    align-content: center;
    z-index: 200;
}
div.modal_outer div.modal_inner{
    background-color: white;
    margin: 1em;
    padding: 1em;
    text-align: center;
    max-height: 80%;
    overflow: auto;
}
div.modal_outer .group{
    border: 1px solid gray;
    border-radius: 0.5em;
    padding: 0.5em;
    margin: 0.5em;
    text-align: left;
}
div.modal_outer .title{
    font-size: x-large;
}
div.modal_outer .button{
    display: block;
    margin: 0.5em;
    padding: 0.5em;
    color: white;
    background-color: darkgreen;
    text-decoration: none;
    text-align: center;
    border-radius: 0.5em;
}
div.modal_outer .tag{
    margin: 0 0.2em;
    padding: 0.1em 0.3em;
    border-radius: 0.4em;
}

div.modal_outer video#qr_reader{
    width: 100%;
}