.test-watermark {
    width: 100%;
    height: 100%; 
    z-index: 99999;
    top: 0; 
    left: 0; 
    position: fixed;
    pointer-events: none;
}
.test-watermark label {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24rem;
    color: #00000018;
}