.streamlit-container {
    position: relative;
    width: 100%;
    height: calc(100vh - 56px - 56px); /* Adjust based on your navbar and footer height */
    overflow: hidden;
}

.streamlit-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}