body {  
    font-family:Georgia, Arial, Helvetica, Sans-serif,serif;
    font-size:15px;
    color:#000;
    background:#fff;
    padding: 5px;
}

body > * {
    margin-top: 1em;
}

.opibm-title {
    font-size: 1.5em;
    text-align: center;
}

.opibm-subtitle {
    font-size: 1.2em;
    text-align: center;
}

.opibm-author {
    text-align: center;
}

.opibm-image  {
    text-align: center;
    margin-top: 2em;
}

.opibm-image img {
    max-height: 400px;
    max-width: 100%;
}