.Piedra {
font-family:'Piedra', cursive;
}
.fast {
 height: 50px;	
 overflow: hidden;
 position: relative;
 background: yellow;
 color: orange;
 border: 1px solid orange;
}
.fast p {
 position: absolute;
 width: 100%;
 height: 100%;
 margin: 0;
 line-height: 50px;
 text-align: center;
 /* Starting position */
 -moz-transform:translateY(50%);
 -webkit-transform:translateY(50%);	
 transform:translateY(50%);
 /* Apply animation to this element */	
 -moz-animation: fast 1s linear infinite alternate;
 -webkit-animation: fast 1s linear infinite alternate;
 animation: fast 1s linear infinite alternate;
}
/* Move it (define the animation) */
@-moz-keyframes fast {
 0%   { -moz-transform: translateY(50%); }
 100% { -moz-transform: translateY(-50%); }
}
@-webkit-keyframes fast {
 0%   { -webkit-transform: translateY(50%); }
 100% { -webkit-transform: translateY(-50%); }
}
@keyframes fast {
 0%   { 
 -moz-transform: translateY(50%); /* Browser bug fix */
 -webkit-transform: translateY(50%); /* Browser bug fix */
 transform: translateY(50%); 		
 }
 100% { 
 -moz-transform: translateY(-50%); /* Browser bug fix */
 -webkit-transform: translateY(-50%); /* Browser bug fix */
 transform: translateY(-50%); 
 }
}
     ul.a {
  list-style-type: square;
}