The universe is indeed composed of energy and matter. Matter can be measured by weight. Energy can be measured in terms of temperature. The higher the density, the higher the temperature, and the lower the density, the lower the temperature. If our universe started from a small point with a very high temperature and reached today, as the universe expands, the density of energy decreases, so the temperature lowers, too. When the temperature lowers, some of the energy causes a phase change into matter, and vice versa. When matter is created, an interaction takes place. At $10^{13}K$, imps (invisible material particles, aka dark matter) are created and a gravitational field is formed as a result of emitting graviton acting on it, which gain masses. Down quarks and up quarks interact with their own intrinsic properties. This interaction is called the quark interaction. When two down quarks and one up quark meet with an imp to create a neutron, the force resulting from the quark interaction is confined inside the neutron.The quark interaction confines the strong force when quarks form a neutron, and mediates the electromagnetic field and electromagnetic force when a neutron transforms to a proton, and binds the nucleons to form heavier particles by strong nuclear interaction.