*.primary {background-color: rgb(0, 51, 153)}
*.secondary {background-color: rgb(66, 66, 66)}
*.tertiary {background-color: rgb(0, 51, 153)}
*.background {background-color: rgb(255, 255, 255)}
*.accent {background: transparent url(../images/Merging_Galaxies.jpg) no-repeat top left}