@mixin pos {
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

.se {
  &-full {
    width: 100%;
    height: 100%;

    &-vw {
      width: 100vw;
      height: 100vh;
    }

    &-fixed {
      @include pos;
      position: fixed;
    }

    &-abs {
      @include pos;
      position: absolute;
    }
  }
}