Candle

Tap to blow out the candle; tap again to light it.

A candle is a stick of wax with a string, the wick, down the middle. The flame's heat melts the wax, the melted wax soaks up the wick, and near the flame it turns into a gas, which is what really burns. The blue part at the bottom burns with plenty of air; the yellow above is tiny bits of soot glowing hot.

This candle starts lit. Tap it to blow it out, and a thin trail of smoke rises from the wick; tap again to light it. A flame is shaped like a teardrop because its hot gases rise; in space, where nothing rises, a candle flame is a round, blue ball. You can pick the wax color in the Splash tab.

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.