main.css

html, body {
    height: 100%;
}

body {
	font: 15px "Helvetica Neue",Calibri,Helvetica,Arial,sans-serif;
	padding: 0; margin: 0;
}

h1, h2 {
	margin-bottom: 0;
}
h1 {
	color: #999;
}
h2 {
    font-weight: 100;
    font-size: 2em;
}

a {
	color: #66f;
	text-decoration: none
}

.container {
	text-align: center;
	padding: 10px 0;
}

#navigation a {
    position: relative;
}
#navigation a[href="#/drop"]:after,
#navigation a[href="#/text"]:after,
#navigation a[href="#/flat"]:after {
    content: 'NEW!';
    font-size: .8em;
    position: absolute;
    top: 0;
    right: 0;
    padding: 0 10px;
    border-radius: 10px;
    background: #f00;
    color: #ff0;
}

.nav {
    margin-bottom: 20px;
    z-index: 1;
    position: relative;
}

.nav a, .nav label {
    display: inline-block;
    padding: 5px;
    width: 140px;
    margin: 0 10px;
    border-radius: 10px;
    cursor: pointer;
    color: #666;
    background: rgba(0,0,0,.1);
}
.nav a:hover, .nav label:hover {
    background: rgba(0,0,0,.2);
}
.nav a.current {
    color: #fff;
    background: rgba(0,0,0,.3);
}

/* Box */

body.box {
	background: #fff url(i/white_brick_wall.png);
	color: #666;
}

label {
    text-align: left;
}

.block {
	margin: 20px 30px;
	display: inline-block;
	width: 50px;
	height: 50px;
}

.round  {border-radius:10px}
.circle {border-radius:30px}
.ur {border-radius:5px 50px 5px 5px}
.ll {border-radius:5px 5px 5px 50px}

/* Drop */

body.drop {
    background: rgb(153, 204, 255);
}

body.drop h1 {
    color: #333;
}

#exampleA img {
    padding: 10px;
}

.logo {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -246px;
    margin-left: -246px;
}
.tooltip {
    display: inline-block;
    width: 100px;
    height: 100px;
    margin: 10px;
    background: #fff;
    position: relative;
    border-radius: 5px;
}
.tooltip:after {
    content: '';
    position: absolute;
    left: 10px;
    bottom: -10px;
    border-style: solid;
    border-color: #fff transparent;
    border-width: 10px 10px 0 10px;
}
.tooltip:before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    right: -100px;
    bottom: -100px;
}

#exampleB img {
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -170px 0 0 -170px;
}
.panel {
    position: absolute;
    background: #fff;
}
.left, .right {
    top: 0;
    bottom: 0;
}
.left {
    left: 0;
    right: 50%;
    margin-right: 160px;
}
.right {
    right: 0;
    left: 50%;
    margin-left: 160px;
}
.top {
    left: 0;
    top: 0;
    right: 0;
    bottom: 50%;
    margin-bottom: 160px;
}
.bottom {
    left: 0;
    right: 0;
    bottom: 0;
    top: 50%;
    margin-top: 160px;
}

#colors {
    position: absolute;
    bottom: 50px;
    left: 0;
    width: 100%;
    text-align: center;
}
#colors div {
    display: inline-block;
    width: 30px;
    height: 30px;
    margin: 10px 10px 0 0;
    border-radius: 5px;
}
#colors div:hover {
    cursor: pointer;
    border: 2px solid #000;
    margin: -2px 8px -2px -2px;
}

/* Text */

body.text {
    background: #fcfff4; /* Old browsers */
    background: -moz-radial-gradient(center, ellipse cover, #fcfff4 0%, #e9e9ce 100%); /* FF3.6+ */
    background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#fcfff4), color-stop(100%,#e9e9ce)); /* Chrome,Safari4+ */
    background: -webkit-radial-gradient(center, ellipse cover, #fcfff4 0%,#e9e9ce 100%); /* Chrome10+,Safari5.1+ */
    background: -o-radial-gradient(center, ellipse cover, #fcfff4 0%,#e9e9ce 100%); /* Opera 12+ */
    background: -ms-radial-gradient(center, ellipse cover, #fcfff4 0%,#e9e9ce 100%); /* IE10+ */
    background: radial-gradient(ellipse at center, #fcfff4 0%,#e9e9ce 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#fcfff4', endColorstr='#e9e9ce',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}

.text h3,
.text h4 {
    display: inline;
    font-size: 5em;
}

.text h4 {
    letter-spacing: .5em;
    color: #fcfff4;
}

.text span {
    display: inline-block;
}

.fold {
    width: 50%;
    margin: 50px auto;
    text-align: left;
}

/* Flat */

body.flat {
    background: -moz-radial-gradient(center, ellipse cover, #ffffff 0%, #d1d1d1 100%); /* FF3.6+ */
    background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#ffffff), color-stop(100%,#d1d1d1)); /* Chrome,Safari4+ */
    background: -webkit-radial-gradient(center, ellipse cover, #ffffff 0%,#d1d1d1 100%); /* Chrome10+,Safari5.1+ */
    background: -o-radial-gradient(center, ellipse cover, #ffffff 0%,#d1d1d1 100%); /* Opera 12+ */
    background: -ms-radial-gradient(center, ellipse cover, #ffffff 0%,#d1d1d1 100%); /* IE10+ */
    background: radial-gradient(ellipse at center, #ffffff 0%,#d1d1d1 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#d1d1d1',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}

#flat span,
#flat i,
#flat b,
#flat u {
    color: #f60;
    background: #fc0;
    display: inline-block;
    width: 50px;
    height: 50px;
    margin-right: 3px;
    border-radius: 10px;
    line-height: 50px;
    font-size: 3em;
    overflow: hidden;
}
#flat i {
    color: #00c;
    background: #99f;
    font-style: normal;
}
#flat b {
    font-weight: normal;
    color: #090;
    background: #9d0;
}
#flat u {
    text-decoration: none;
    color: #c00;
    background: #f99;
}