The skull symbolizes death and decay, but it's not the only symbol. Skeletons represent decadent death, which means a new beginning. The skeleton represents one side of fear, and the other side of freedom and rebellion. In Mexico, skeletons symbolize respect and respect. Latin Americans see it as a symbol of life.

The symbolic meaning of fire is warm, sunshine, passion, bright red flowers, fierce struggle environment. Flame is a state or phenomenon, burning combustible gas, luminous, heating, flashing and rising. Combustible liquid or solid must be changed into gas before it can be burned to form flame. It is mainly due to the oxidation of combustible gas by air or pure oxygen, which causes light and heat. Oxygen is not necessary for the combustion of some substances. For example, active magnesium can be burned in carbon dioxide and nitrogen.

Source: @radiantcolorsink