Diretriz de design do CSS

h1 {
  margin-bottom: 24px;
  font-size: 44px;
  /* for normal 16 to 32 px for heading above 32px */
  line-height: 1.1;
/*  for heading below 1.5 and for normal text use 1.5 to 2  */
  letter-spacing: -1px;
  /* For heading letter spacing should be less */
}
SabDev