body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4; /* Light background color */
}

.hidden-text {
    color: transparent; /* Text is invisible */
    text-decoration: none;
    text-underline-offset: 4px;
    font-size: 20px;
    padding: 10px 20px;
    background-color: #e0e0e0; /* Background color */
    border-radius: 8px;
    transition: color 0.3s ease-in-out, text-decoration-color 0.3s ease-in-out;
    cursor: pointer;
}

.hidden-text:hover {
    color: blue;
    text-decoration: wavy underline;
    text-decoration-color: blue;
}