That vertical scrollbar is still visible even if the iframe has enough height to display the whole MyBB page. The scrollbar looks nasty and it should be removed however the horizonatl scrollbar must appear when needed (for example on devices with small screen - tablets and phones).
That vertical scrollbar is still visible even if the iframe has enough height to display the whole MyBB page. The scrollbar looks nasty and it should be removed however the horizonatl scrollbar must appear when needed (for example on devices with small screen - tablets and phones).