guidelines.css

.declaration-order {
	/* Positioning */
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	z-index: 100;

	/* Box-model */
	display: block;
	float: right;
	width: 100px;
	height: 100px;

	/* Typography */
	font: normal 13px "Helvetica Neue", sans-serif;
	line-height: 1.5;
	color: #333;
	text-align: center;

	/* Visual */
	background-color: #f5f5f5;
	border: 1px solid #e5e5e5;
	border-radius: 3px;

	/* Misc */
	opacity: 1;
}

.selector {
	-webkit-border-radius: 3px;
	   -moz-border-radius: 3px;
			border-radius: 3px;
}

.span1 { width: 60px; }
.span2 { width: 140px; }
.span3 { width: 220px; }

.sprite {
	display: inline-block;
	width: 16px;
	height: 15px;
	background-image: url(../img/sprite.png);
}
.icon           { background-position: 0 0; }
.icon-home      { background-position: 0 -20px; }
.icon-account   { background-position: 0 -40px; }

.selector {
    background-image:
        linear-gradient(#fff, #ccc),
        linear-gradient(#f3c, #4ec);
    box-shadow:
        1px 1px 1px #000,
        2px 2px 1px 1px #ccc inset;
}


/* ==========================================================================
   Grid layout
   ========================================================================== */

/**
 * Column layout with horizontal scroll.
 *
 * This creates a single row of full-height, non-wrapping columns that can
 * be browsed horizontally within their parent.
 *
 * Example HTML:
 *
 * <div class="grid">
 *     <div class="cell cell-3"></div>
 *     <div class="cell cell-3"></div>
 *     <div class="cell cell-3"></div>
 * </div>
 */

/**
 * Grid container
 *
 * Must only contain `.cell` children.
 *
 * 1. Remove inter-cell whitespace
 * 2. Prevent inline-block cells wrapping
 */

.grid {
    height: 100%;
    font-size: 0; /* 1 */
    white-space: nowrap; /* 2 */
}

/**
 * Grid cells
 *
 * No explicit width by default. Extend with `.cell-n` classes.
 *
 * 1. Set the inter-cell spacing
 * 2. Reset white-space inherited from `.grid`
 * 3. Reset font-size inherited from `.grid`
 */

.cell {
    position: relative;
    display: inline-block;
    overflow: hidden;
    box-sizing: border-box;
    height: 100%;
    padding: 0 10px; /* 1 */
    border: 2px solid #333;
    vertical-align: top;
    white-space: normal; /* 2 */
    font-size: 16px; /* 3 */
}

/* Cell states */

.cell.is-animating {
    background-color: #fffdec;
}

/* Cell dimensions
   ========================================================================== */

.cell-1 { width: 10%; }
.cell-2 { width: 20%; }
.cell-3 { width: 30%; }
.cell-4 { width: 40%; }
.cell-5 { width: 50%; }

/* Cell modifiers
   ========================================================================== */

.cell--detail,
.cell--important {
    border-width: 4px;
}