baseline-grid.css

/* Change the values on lines 6, 7 and 8 to adjust the height of your baseline */
.baseline:after {
  background: repeating-linear-gradient( 
    0deg, 
    rgba(255, 255, 255, 0.05), 
    rgba(255, 255, 255, 0.05) 24px, 
    rgba(0, 0, 0, 0.1) 24px, 
    rgba(0, 0, 0, 0.1) 48px
  );
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  content: "";
  display: block;
}

html {
  height: 100%;
}