_grid.css

.grid {
  background: white;
  margin: 0 0 20px 0; }
  .grid:after {
    /* Or @extend clearfix */
    content: "";
    display: table;
    clear: both; }

[class*='col-'] {
  float: left;
  padding-right: 20px; }
  .grid [class*='col-']:last-of-type {
    padding-right: 0; }

.col-2-3 {
  width: 66.66%; }

.col-1-3 {
  width: 33.33%; }

.col-1-2 {
  width: 50%; }

.col-1-4 {
  width: 25%; }

.col-1-8 {
  width: 12.5%; }

.module {
  padding: 20px;
  background: #eee; }

/* Opt-in outside padding */
.grid-pad {
  padding: 20px 0 20px 20px; }
  .grid-pad [class*='col-']:last-of-type {
    padding-right: 20px; }

body {
  padding: 10px 50px 200px;
  background: url(http://subtlepatterns.com/patterns/dark_wall_@2X.png);
  background-size: 300px 300px; }

h1 {
  color: white; }
  h1 em {
    color: #666;
    font-size: 16px; }