ensl.org/app/assets/stylesheets/layout/_body.scss

/*
  Main Containers
*/

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
}

body {
  background: $dark-blue;
  @include background-image(linear-gradient($dark-blue, $medium-gray));
}

#container {
  min-height: 100%;
}

%container-padded {
  padding: 0 em(20);
}

.wrapper {
  @include outer-container;
}

#content {
  @extend %container-padded;
}

#content {
  @include span-columns(12);
  background: $light-blue;
  padding-top: em(20);
}

#forums {
  @include span-columns(12);
}

#main {
  @include span-columns(9);
}

#sidebar {
  @include span-columns(3);
  @include omega();
}