Algodoo

Suggestion -- You can hide the outline of an object (such as the black rectangle lines that we see around the boxes in this scene) this way:

1. Right click on the object (in this case, the rectangular box).
2. With the box selected and the "Edit" menu showing, move your cursor down to "Appearance". Another panel should now be showing.
3. In that Appearance panel you should see a check-box labeled "Draw Borders". Uncheck that check-box.
4. The lines around that particular object should no longer be seen!
6. After repeating this for each of the boxes, you then can save the edited scene and upload it to Algobox!