.qrscanner video {
  max-width: 100%;
  max-height: 75%;
}

.row-element-set {
  display: flex;
  flex-direction: column;
}
.row-element {
  padding: .2em 0em;
}

.row-element-set-QRScanner
{
  max-width: 30em; 
  display: flex;
  flex-direction: column;
}

body
{
  display: flex;
  justify-content: center;
}

.form-field-caption {
  font-weight: bold;
}

.form-field-input
{
 width: 100%; 
}

    .error_message {
       color: red; 
       background-color: white; 
       border: 1px solid red; 
       padding: 4px; 
       font-family: sans-serif 
    }