body {
    font-family: 'Lucida Grande', 'Lucida Sans Unicode', Tahoma, Sans-Serif;
    line-height: 1.5;
    background-color: #fff;
    color: #222;
    margin: 0;
}

h1 {
    background: #167afe;
    color: white;
    margin: 0 0 1rem 0;
    text-align: center;
    padding: 1rem;
}

a {
    color: #222;
}

pre {
    overflow: auto;
    max-height: 300px;
}

pre, 
code {
    font-size: 1.2rem;
    background: #DDD;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
}

#textZone {
    margin-bottom: 170px;
}

.description,
.buttons,
pre {
    max-width: 90%;
    margin: auto;
    margin-bottom: 1rem;
    padding: 1rem;
}
pre > div {
    margin-bottom: 5px;
}

.buttons {
    text-align: center;
    margin-bottom: 1rem;
}
.buttons .active {
    background: #167afe;
    color: #fff;
}
.buttons .active:hover {
    background: #1964c8;
}
.buttons a {
    display: inline-block;
    background: #CCC;
    padding: 0.2rem 0.5rem;
    margin: 0.2rem 0.1rem;
    text-decoration: none;
    color: #000;
}
.buttons a:hover {
    background: #DDD;
}
.label {
    display: inline-block;
    background: #444;
    color: #FFF;
    padding: 0.1rem 0.5rem;
    border-radius: 3px;
}
.label.blue {
    background: #177afd;
}