body {
  margin: 0;
  overflow-x: hidden;
}

.relative {
  position: relative;
  width: 360px;
  height: 360px;
  top: 60px;
  left: 150px;
  margin-bottom: 60px;
}

.relative:after {
  display: block;
  content: '';
  background-image: url(../img/relative.png);
  background-size: 510px 421px;
  width: 510px;
  height: 421px;
  position: absolute;
  top: -60px;
  left: -150px;
  z-index: -10;
}

.static {
  position: static;
  width: 360px;
  height: 360px;
}

.static:after {
  display: block;
  content: '';
  background-image: url(../img/static.png);
  background-size: 360px 360px;
  width: 360px;
  height: 360px;
}

.absolute {
  position: absolute;
  width: 240px;
  height: 240px;
  right: 80px;
  bottom: 60px;
}

.absolute:after {
  display: block;
  content: '';
  background-image: url(../img/absolute.png);
  background-size: 319px 300px;
  width: 319px;
  height: 300px;
  position: absolute;
  right: -80px;
  bottom: -60px;
  z-index: -5;
}

.absolute .absolute:after {
  z-index: -1;
}

.fixed {
  position: fixed;
  width: 240px;
  height: 240px;
  right: 80px;
  bottom: 60px;
}

.fixed:after {
  display: block;
  content: '';
  background-image: url(../img/fixed.png);
  background-size: 320px 300px;
  width: 320px;
  height: 300px;
  position: absolute;
  right: -80px;
  bottom: -60px;
  z-index: -5;
}

.sticky {
  position: sticky;
  width: 240px;
  height: 90px;
  top: 0;
  background-image: url(../img/sticky.png);
  background-size: 240px 90px;
}

.height {
  width: 750px;
  height: 120px;
  background-image: url(../img/height-120.png);
  background-size: 750px 120px;
  position: relative;
  z-index: -20;
}