/*  */

.absolute {
  position: absolute;
}

.relative {
  position: relative;
}

.fixed {
  position: fixed;
}

/*  */

.all {
  top: 0; right: 0;
  bottom: 0; left: 0;
}
.top {
  top: 0;
}
.right {
  right: 0;
}
.bottom {
  bottom: 0;
}
.left {
  left: 0;
}