.demo {
    padding: 30px 100px;
    width: 960px;
    margin: 0 auto;
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

.demo h1 {
    color: #404040;
    font-weight: 500;
    line-height: 40px;
    margin-bottom: 24px;
}

.demo h2,
.demo h3,
.demo h4,
.demo h5,
.demo h6 {
    color: #404040;
    margin: 1.6em 0 0.6em 0;
    font-weight: 500;
    clear: both;
}

.demo h1 {
    font-size: 28px;
}

.demo h2 {
    font-size: 22px;
}

.demo h3 {
    font-size: 16px;
}

.demo h4 {
    font-size: 14px;
}

.demo h5 {
    font-size: 12px;
}

.demo h6 {
    font-size: 12px;
}

.demo hr {
    height: 1px;
    border: 0;
    background: #e9e9e9;
    margin: 16px 0;
    clear: both;
}

.demo table {
    width: 100%;
    text-align: left;
    border-spacing: 0;
}

.demo table thead th {
    border-bottom: 1px solid #e9e9e9;
}

.demo table tbody tr:nth-of-type(even) {
    background-color: #e9e9e9;
}

.demo table td {
    padding: 5px 2px;
    vertical-align: top;
}

.demo .btn {
    cursor: pointer;
    display: inline-block;
    margin: 0 20px;
    text-decoration: none;
    outline: 0;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    padding: 4px 8px;
    color: #fff;
    background: #666;
    border-radius: 3px;
}

.demo .btn-info {
    background: #39f;
}

.demo .btn-success {
    background: #0c6;
}

.demo .btn-warning {
    background: #f90;
}

.demo .btn-error {
    background: #f30;
}