html, body {
  margin: 0;
  height: 100%;
}

#game {
  background-color: #99ccff;
  margin: 0;
  width: 100%;
  height: 100%;
}

.upper-pipe {
  position: fixed;
  top: 0px;
}

.lower-pipe {
  position: fixed;
  bottom: 0px;
}

#clouds {
  width: 100%;
  height: 104px;
  position: fixed;
  top: 10px;
  background-image: url("/assets/clouds.png");
}

#fields {
  width: 100%;
  height: 208px;
  position: fixed;
  bottom: 0px;
  background-image: url("/assets/fields.png");
}

html, body {
  margin: 0;
  height: 100%;
}

#game {
  background-color: #99ccff;
  margin: 0;
  width: 100%;
  height: 100%;
}

.upper-pipe {
  position: fixed;
  top: 0px;
}

.lower-pipe {
  position: fixed;
  bottom: 0px;
}

#clouds {
  width: 100%;
  height: 104px;
  position: fixed;
  top: 10px;
  background-image: url("../assets/clouds.png");
}

#fields {
  width: 100%;
  height: 208px;
  position: fixed;
  bottom: 0px;
  background-image: url("../assets/fields.png");
}

Fix image path issue on gh-pages branch
Fix image path issue on gh-pages branch
