#chartdiv {
    width: 100%;
    height: 700px;
}

.areas {
    text-align: center;
    margin-bottom: 15px;
    min-height: 95px;
}

.areas .value {
    display: inline-block;
    font-size: 1.3em;
    padding: 5px 10px;
    border: 1px solid #ddd;
    cursor: pointer;
}

.areas .value:hover {
    background: #ecc;
}