#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5); /* Adjust transparency here */
    backdrop-filter: blur(5px); /* Apply blur effect */
    z-index: 999; /* Ensure it's above other content */
}