body {
  text-align: center;
  font: normal 18px sans-serif;
  background: #fff;
  color: #555;
}
.spriteslider {
  margin: 20px auto;
  padding: 0px;    
  width: 420px;
}
#spritetarget {
  width: 420px;
  height: 420px;
  background-image: url(../strip1.jpg); /* horizontal spritesheet - image from http://preloaders.net */
  background-repeat: repeat-x;
}