#contentDiv{
    border: 1px solid black;
    width: 100%;
    min-height: 300px;
    padding: 20px;
    background-color: #eeeeee;
}

#title{
    font-size: 1.5em;
}

.leftbtn{
    float: left;
}

.rightbtn{
    float: right;
}

.centerItem{
    text-align: center;
}

.smallImage{
    width: 150px;
}

.mediumImage{
    width: 300px;
}

.largeImage{
    width: 700px;
}

.extraLargeImage{
    width: 1200px;
}