*, *:before, *:after {
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: #333;
}
  
a:hover {
    text-decoration: underline;
}

form {
    flex-basis: 50%;
    flex-grow: 1;
    flex-shrink: 1;
    height: calc(100% - 10px);
    margin-left: 10px;
    margin-right: 10px;
}

.header {
    width: 100%;
    height: 50px;
    display: flex;
    justify-content: space-between;
    background-color: #CCC;
    padding: 5px 10px;
    align-items: center;
}

.content {
    width: 100%;
    justify-content: space-between;
    padding: 5px 10px;
    align-items: center;
}

.debug {
    color: #CC0;
}

.error {
    color: #C00;
}

.qrcode {
    width: 300px;
    height: 300px;
}