@keyframes avisoA { 
     0% { left: 0px; background-color:blue} 
	 100% { left: 600px;background-color:pink }   
}

#aviso {
	width: 300px; 
	height: 30px;
	position: relative; 
	animation: avisoA 10s ease-out infinite alternate; 
}
#aviso > p{
	font: 20px "century gothic";
	color: white;
	text-align:center;
}
#aviso:hover{
	animation-play-state:paused;
}