@media only screen and (max-width: 900px) {
	#group-sittings td:nth-child(1) { background-color: hsla(212, 57%, 79%, 1) ; }
}

@media only screen and (max-width: 600px) {
	.header-nav-menu ul ul ul a { background-color: hsla(143, 32%, 92%, 1)}
	.header-nav-menu ul ul ul ul a { background-color: hsla(150, 27%, 96%, 1)}
}