@-webkit-keyframes movimiento-diagonal {

    from {
      left: -10px;
      
    }

    to {
      left: 50px;
      
    }

 } 
	
 
 


#anim {
    	-webkit-animation-name: movimiento-diagonal;
    	-webkit-animation-duration: 3s;
    	-webkit-animation-iteration-count: infinite;
		-webkit-animation-direction: alternate;/*para que vuelva a su posicion inicial */
		width: 1000px;
		position: relative;  
  	}