/*body {
  padding: 3em 2em;
  font: normal 40px/50px Arial, sans-serif;
  color: orange;
}*/

b {
  float: left;
  overflow: hidden;
  position: relative;
  height: 50px;
  margin-top: -50px;
}
.txt_animado_column {
display: inline-block;
color: orange;
position: relative;
white-space: nowrap;
top: 0;
-webkit-animation: move 12s;
-webkit-animation-iteration-count: infinite;
-webkit-animation-delay: 2s;
font: normal 40px/50px Impact;
margin-left: 50px;
width: 100%;
}

@keyframes move {
0%  { top: 0px; }
20% { top: -50px; }
40% { top: -100px; }
60% { top: -150px; }
80% { top: -200px; }
}