Create typography style

When we design a typography style, we should think about what is different between mobile and desktop.

root: typography/scss/main.scss

h1 {
  font-size: pxToRem(24);
  font-weight: $font-bold;
  margin: pxToRem(25) 0;
@media #{$mq-large} {
    font-size: pxToRem(72);
    font-weight: $font-black;
    margin: pxToRem(60) 0;
  }
}