node_modules/bulma/sass/layout/section.sass

   1 $section-padding: 3rem 1.5rem !default
   2 $section-padding-medium: 9rem 1.5rem !default
   3 $section-padding-large: 18rem 1.5rem !default
   4
   5 .section
   6   padding: $section-padding
   7   // Responsiveness
   8   +desktop
   9     // Sizes
  10     &.is-medium
  11       padding: $section-padding-medium
  12     &.is-large
  13       padding: $section-padding-large