Reply To: CSS Image Thumbnail Help In WordPress

[Atelierbram]

I suppose this can be done with floating the header to the right.

.has-sidebar .entry {
  overflow: auto;
}

.has-sidebar .entry > header {
  float: right;
  max-width: 545px;
}

But you also probably want this to be in a media-query, and that’s where things get more complicated …

If it would help, I don’t need that sidebar but don’t have code to get rid of it.

This makes me wonder about your editing process, but anyway, because this is WordPress, you can edit the template for this page (have to find it first though), or if this is a widget, remove it from the Dashboard -> Appearance -> widgets