{{selector}}:after {
  position: absolute;
  width: auto;
  height: auto;
  z-index: 9999;
  content: '';
  display: block;
  pointer-events: none;
  top: {{offsetY}};
  right: 0;
  bottom: 0;
  left: {{offsetX}};
  background-color: transparent;
  background-image: linear-gradient({{color}} 1px, transparent 1px);
  background-size: 100% {{size}};
}