@keyframes fade_in 
	{
		from 
		{
			opacity: 0;
		}
		to 
		{
			opacity: 1;
		}
	}	
	
		
	@keyframes fade_out
	{
		from 
		{
			opacity: 1;
		}
		to 
		{
			opacity: 0;
		}
	}