body {
    font-family: "Open Sans", Helvetica, Arial, sans-serif;
    font-size: 12pt;
    margin: 1em;
}

#page {
    margin: auto;
    width: 640px;
    padding: 1em;
    border: 1px solid #76cfa6;
    border-radius: 5px;
}

.room_avatar {
    width: 48px;
    height: 48px;
    float: left;
}

.room_content {
    clear: left;
}

.historical {
    color: #888;
}

.sender_name  {
    display: inline;
}

.message_time  {
    display: inline;
}