.welcome_promo_party {
  background-image: url(/static/sprites/spritesmith-largeSprites-1.png);
  background-position: 0px 0px;
  width: 270px;
  height: 180px;
}
.welcome_sample_tasks {
  background-image: url(/static/sprites/spritesmith-largeSprites-1.png);
  background-position: -271px 0px;
  width: 246px;
  height: 165px;
}