It is easy to put a border around this <i>flag</i> image
Hansestadt <a href="//commons.wikimedia.org/wiki/L%C3%BCbeck" title="Lübeck">Lübeck</a>
1941-01-22
This <i>W3C-unspecified</i> <a href="https://en.wikipedia.org/wiki/Vector_images" class="extiw" title="w:Vector images">vector image</a> was created with <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a> .