[cs-span]:not([cs-span=""])::define( span )
	{
		data:
			{
				span-4-footer:
					span-1( 0, 450 ),
					span-2( 450, 950 ),
					span-4( 950 )
				;
				span-3-footer:
					span-1( 0, 450 ),
					span-2( 450, 950 ),
					span-3( 950 )
				;
			}
		;
	}