Hi Dave,
TiddlyWiki automatically expands the width of a tiddler to 100%,
when the sidebar is hidden (or the screen isn't wide enough). To
limit that, you can, as you said, set max-width for the
.tc-tiddler-frame css class:
div.tc-tiddler-frame {
max-width: 600px;
}
If you want to make it work with the tiddler width set in the
control panel (assuming you are using a theme based on the vanilla
theme), you can take the value for the tiddler width as you
max-width:
div.tc-tiddler-frame {
max-width: {{$:/themes/tiddlywiki/vanilla/metrics/tiddlerwidth}};
}
/Andreas