CSS: Genesis Column Classes including fifths

column-classes.css

/* Column Classes
  Link: Link: http://wpsmith.net/2013/wp/genesis-2-0-drops-fifths-from-column-classes/
  Link: http://twitter.github.io/bootstrap/assets/css/bootstrap-responsive.css
--------------------------------------------- */

.five-sixths,
.four-sixths,
.four-fifths,
.one-fifth,
.one-fourth,
.one-half,
.one-sixth,
.one-third,
.three-fourths,
.three-fifths,
.three-sixths,
.two-fourths,
.two-fifths,
.two-sixths,
.two-thirds {
	float: left;
	margin-left: 2.564102564102564%;
}

.one-half,
.three-sixths,
.two-fourths {
	width: 48.717948717948715%;
}

.one-third,
.two-sixths {
	width: 31.623931623931625%;
}

.four-sixths,
.two-thirds {
	width: 65.81196581196582%;
}

.one-fourth {
	width: 23.076923076923077%;
}

.three-fourths {
	width: 74.35897435897436%;
}

.one-fifth {
	width: 17.9487179487179488%;
}

.two-fifths {
	width: 38.4615384615384616%;
}

.three-fifths {
	width: 58.9743589743589744%;
}

.four-fifths {
	width: 79.4871794871794872%;
}

.one-sixth {
	width: 14.52991452991453%;
}

.five-sixths {
	width: 82.90598290598291%;
}

.first {
	clear: both;
	margin-left: 0;
}

column-classes.min.css

.five-sixths,.four-sixths,.four-fifths,.one-fifth,.one-fourth,.one-half,.one-sixth,.one-third,.three-fourths,.three-fifths,.three-sixths,.two-fourths,.two-fifths,.two-sixths,.two-thirds {float: left;margin-left: 2.564102564102564%;}.one-half,.three-sixths,.two-fourths {width: 48.717948717948715%;}.one-third,.two-sixths {width: 31.623931623931625%}.four-sixths,.two-thirds {width: 65.81196581196582%}.one-fourth {width: 23.076923076923077%}.three-fourths {width: 74.35897435897436%}.one-fifth {width: 17.9487179487179488%}.two-fifths {width: 38.4615384615384616%}.three-fifths {width: 58.9743589743589744%}.four-fifths {width: 79.4871794871794872%}.one-sixth {width: 14.52991452991453%}.five-sixths {width: 82.90598290598291%}.first {clear: both;margin-left: 0}

See the tutorial here: http://wpsmith.net/2013/wp/genesis-2-0-drops-fifths-from-column-classes/