Ghost/ghost/admin/app/styles/spirit/_display.css

/*

   Base:
    d = display

   Modifiers:
    n     = none
    b     = block
    ib    = inline-block
    it    = inline-table
    t     = table
    tc    = table-cell
    t-row          = table-row
    t-columm       = table-column
    t-column-group = table-column-group

   Media Query Extensions:
     -ns = not-small
     -m  = medium
     -l  = large

*/

.dn {              display: none; }
.di {              display: inline; }
.db {              display: block; }
.dib {             display: inline-block; }
.dit {             display: inline-table; }
.dt {              display: table; }
.dtc {             display: table-cell; }
.dt-row {          display: table-row; }
.dt-row-group {    display: table-row-group; }
.dt-column {       display: table-column; }
.dt-column-group { display: table-column-group; }

/*
  This will set table to full width and then
  all cells will be equal width
*/
.dt--fixed {
  table-layout: fixed;
  width: 100%;
}

@media (--breakpoint-not-small) {
  .dn-ns {              display: none; }
  .di-ns {              display: inline; }
  .db-ns {              display: block; }
  .dib-ns {             display: inline-block; }
  .dit-ns {             display: inline-table; }
  .dt-ns {              display: table; }
  .dtc-ns {             display: table-cell; }
  .dt-row-ns {          display: table-row; }
  .dt-row-group-ns {    display: table-row-group; }
  .dt-column-ns {       display: table-column; }
  .dt-column-group-ns { display: table-column-group; }

  .dt--fixed-ns {
    table-layout: fixed;
    width: 100%;
  }
}

@media (--breakpoint-medium) {
  .dn-m {              display: none; }
  .di-m {              display: inline; }
  .db-m {              display: block; }
  .dib-m {             display: inline-block; }
  .dit-m {             display: inline-table; }
  .dt-m {              display: table; }
  .dtc-m {             display: table-cell; }
  .dt-row-m {          display: table-row; }
  .dt-row-group-m {    display: table-row-group; }
  .dt-column-m {       display: table-column; }
  .dt-column-group-m { display: table-column-group; }

  .dt--fixed-m {
    table-layout: fixed;
    width: 100%;
  }
}

@media (--breakpoint-large) {
  .dn-l {              display: none; }
  .di-l {              display: inline; }
  .db-l {              display: block; }
  .dib-l {             display: inline-block; }
  .dit-l {             display: inline-table; }
  .dt-l {              display: table; }
  .dtc-l {             display: table-cell; }
  .dt-row-l {          display: table-row; }
  .dt-row-group-l {    display: table-row-group; }
  .dt-column-l {       display: table-column; }
  .dt-column-group-l { display: table-column-group; }

  .dt--fixed-l {
    table-layout: fixed;
    width: 100%;
  }
}