div#frame {
  padding-top: 100px;
}

img#juksu {
  height:                    200px;
  margin-left:               2500px;
  animation-name:            walker;
  animation-duration:        20s;
  animation-iteration-count: infinite;
  animation-timing-function: ease-out;
}

@keyframes walker {
  from {margin-left: 2500px; }
  to   {margin-left: 5px; }
}