.close-btn {
    position: absolute;
    top: 8px; /* Adjust the position */
    right: 10px; /* Adjust the position */
    width: 40px; /* Adjust the size */
    height: 40px; /* Adjust the size */
    background-color: transparent; /* No background color */
    color:  darkgrey; /* Black color for the icon */
    border: none;
    cursor: pointer;
    font-size: 1.2em; /* Adjust the font size */
}

.close-btn i {
        line-height: 30px; /* Center the icon vertically */
 }