.pdf-reader {
    max-width: 100%; /* Ensure the reader doesn't exceed the parent width */
    margin: 0 auto; /* Center the reader */
}

.pdf-reader-google {
    position: relative;
    width: 100%; /* Full width of the container */
    padding-top: 75%; /* Maintain aspect ratio (75% for 4:3 ratio; adjust as needed) */
    overflow: hidden; /* Prevent overflow */
}

#iframe_reader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    border: none; /* Remove border */
}