For example: When I try to put h3 headings around the <img...> line or add a width or height as below, it seems to have no effect on the display on the smartphone. The height="90%" command wipes out the picture in Sigil.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
<h1 id="heading_id_2">Dachau, including photos</h1>
<p>I donít remember... were SS men who had been arrested and were awaiting possible trial and punishment. This picture</p>
<p><img alt="" src="../Images/leepix1.jpg" width="90%" /></p>
<p>will give you some idea of what the scene...