:host {
    display: inline-table;
    vertical-align: middle;
    container-type: inline-size;
    font-family: Arial,Helvetica,"Microsoft Yahei";
    font-size: 14px;
    aspect-ratio: 1;
}

.mod-qrcode{
    position: relative;
    width: 100%;
    height: 100%;
}
.mod-qrcode canvas{
    width: 100%;
    height: 100%;
    background: #ffffff;
    vertical-align: middle;
}