test.css

/* test page styling */

* { 
    padding: 0; 
    margin: 0; 
}

body { 
    background: #033649;
    font-family: Georgia, Times, "Times New Roman", serif;
    color: #fff;
    border: 9px solid #fff;
}

h1 {
    color: #fff;
    display: block;
    margin: 0 0 1em 0;
    font-weight: normal;
    font-size: 30px;
}

h2 {
    color: #ddd;
    display: block;
    margin: 0 0 1em 0;
    font-weight: normal;
    font-size: 24px;
}

p, ul li {
    margin: 0 0 1em 0;
    color: #bebebe;
    font-size: 12px;
}

ul {
    list-style: square;
}

.nav {
    margin: 0 0 2em 0;
    font-size: 16px;
}

a, a:link, a:visited, a:active, a:hover {
    color: #ccc;
    text-decoration: none;
    border-bottom: 1px solid #555;
    padding: 0 0 2px 0;
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 60px 20px;
}

.nav-sep {
    padding: 0 5px;
}

.controls {
    overflow: hidden;
    margin: 60px 0 30px 0;
}

.controls .checkbox {
    float: left;
    font-size: 13px;
    color: #ddd;
    margin: 5px 20px 5px 0;
}

.btn-remove,
.btn-hidden {
    margin: -8px 20px 0 20px;
    line-height: 1;
    border: 0;
    background: #ddd;
    color: #555;
    padding: 7px 10px;
}

/* test items */

.items-container,
.data-test-items {
    overflow: hidden;
    margin: 0 -1%;
}

.item {
    display: block;
    float: left;
    width: 23%;
    background: #00A0B0;
}

.item p {
    color: rgba(255,255,255,0.6);
    line-height: 1.5;
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
}

.item h2,
.item h3,
.item h4 {
    color: #fff;
    margin: 0 0 1em 0;
    font-weight: normal;
}

.item h2 {
    font-size: 24px;
}

.item h3 {
    font-size: 20px;
}

.item h4 {
    font-size: 16px;
}

.item-0 { background: #00A0B0; border-color: #008795 !important; }
.item-1 { background: #6A4A3C; border-color: #52392e !important; }
.item-2 { background: #CC333F; border-color: #ad2b35 !important; }
.item-3 { background: #EB6841; border-color: #ca5938 !important; }
.item-4 { background: #EDC951; border-color: #d8b74a !important; }
.item-5 { background: #00A0B0; border-color: #008795 !important; }
.item-6 { background: #6A4A3C; border-color: #52392e !important; }
.item-7 { background: #CC333F; border-color: #ad2b35 !important; }
.item-8 { background: #EB6841; border-color: #ca5938 !important; }
.item-9 { background: #EDC951; border-color: #d8b74a !important; }
.item-10 { background: #00A0B0; border-color: #008795 !important; }
.item-11 { background: #6A4A3C; border-color: #52392e !important; }

.item img {
    display: block;
    max-width: 100%;
}

.item p:last-child {
    margin-bottom: 0;
}

.items-container.big-items .item {
    width: 48%;
}

/* test margins */

.test-margin .item {
    margin: 1%;
}

/* test a mix of padding amounts */

.test-padding .item {
    padding: 20px;
}

.test-padding .item-5 {
    padding: 30px;
}

.test-padding .item-6 {
    padding: 40px;
}

.test-padding .item-7 {
    padding: 50px;
}

/* test a mix of border widths */

.test-border .item {
    border: 1px solid #eee;
}

.test-border .item-2 {
    border: 3px solid #eee;
}

.test-border .item-3 {
    border: 6px solid #eee;
}

.test-border .item-5 {
    border: 8px solid #eee;
}

.test-border .item-8 {
    border: 10px solid #eee;
}

/* test border-box */

.test-border-box .item {
    -moz-box-sizing: border-box; 
    -webkit-box-sizing: border-box; 
    box-sizing: border-box;
}

/* test fixed height items */

.items-container.fixed-items .item-0 {
    height: 150px;
}

.items-container.fixed-items .item-1 {
    height: 190px;
}

.items-container.fixed-items .item-2 {
    height: 230px;
}

.items-container.fixed-items .item-3 {
    height: 250px;
}

/* test responsive */

@media only screen and (max-width: 1024px) {
    .item,
    .items-container.big-items .item {
        width: 48%;
    }
}

@media only screen and (max-width: 640px) {
    .test-margin .item,
    .test-margin .items-container.big-items .item {
        width: 99%;
        margin-left: 0;
        margin-right: 0;
    }
}

/* test hidden */

.test-hidden .hidden-items > .item-0,
.test-hidden .hidden-items > .item-2 {
    display: none;
}

.test-hidden .hidden-items > .item-1,
.test-hidden .hidden-items > .item-3 {
    visibility: hidden;
}

/* test inline-block */

.inline-block-items {
    text-align: center;
}

.inline-block-items .item {
    display: inline-block;
    vertical-align: top;
    /*width: 20%;*/
    float: none;
}