.setTopLine(@c: #C7C7C7) {
  content: " ";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 1px;
  border-top: 1px solid @c;
  color: @c;
  transform-origin: 0 0;
  transform: scaleY(0.5);
}

.setBottomLine(@c: #C7C7C7) {
  content: " ";
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  height: 1px;
  border-bottom: 1px solid @c;
  color: @c;
  transform-origin: 0 100%;
  transform: scaleY(0.5);
}

.setLeftLine(@c: #C7C7C7) {
  content: " ";
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  bottom: 0;
  border-left: 1px solid @c;
  color: @c;
  transform-origin: 0 0;
  transform: scaleX(0.5);
}

.setRightLine(@c: #C7C7C7) {
  content: " ";
  position: absolute;
  right: 0;
  top: 0;
  width: 1px;
  bottom: 0;
  border-right: 1px solid @c;
  color: @c;
  transform-origin: 100% 0;
  transform: scaleX(0.5);
}

.setLine(@c: #C7C7C7) {
  content: " ";
  position: absolute;
  left: 0;
  top: 0;
  width: 200%;
  height: 200%;
  border: 1px solid @c;
  color: @c;
  transform-origin: left top;
  transform: scale(0.5);
}

.lotus-1px, .lotus-1px-t, .lotus-1px-b, .lotus-1px-tb, .lotus-1px-l, .lotus-1px-r {
  position: relative;
}

.lotus-1px {
  &:before {
    .setLine();
  }
}

.lotus-1px-t {
  &:before {
    .setTopLine();
  }
}

.lotus-1px-b {
  &:after {
    .setBottomLine();
  }
}

.lotus-1px-tb {
  &:before {
    .setTopLine();
  }
  &:after {
    .setBottomLine();
  }
}

.lotus-1px-l {
  &:before {
    .setLeftLine();
  }
}

.lotus-1px-r {
  &:after {
    .setRightLine();
  }
}