* { margin: 0; padding: 0; border: 0; }
body { background-color: #072240; overflow: hidden; color: #fff; text-align: center; }
p { margin: 20px; }
div#space { position: absolute; left: 50%; top: 50%; }
div#guide { position: absolute; left: 0; top: 0; width: 100%; height: 100%; }
div.pixel { position: absolute; width: 2px; height: 2px; margin-top: -1px; margin-left: -1px; background-color: #9effff; }
div.rectangle { position: absolute; }
div.guide_x { position: absolute; height: 2px; top: 50%; width: 100%; background-color: #0088ff; }
div.guide_y { position: absolute; width: 2px; left: 50%; height: 100%; background-color: #0088ff; }