style.css

body {
    width: 960px;
    margin: 2em auto 0;
}

p,
span,
h1,
h2,
h3,
h4,
h5,
h6,
div,
label,
li{
    font-family: Helvetica, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1em;
    line-height: 1.25em;
    color:#333;
}

h1 span {
    font-weight:normal;
    text-decoration:underline;
}
#sandbox {
    margin-top: 40%;
    text-align: center;
}

#sandbox svg {
    margin-top: -40%;
}

.bar {
    display: inline-block;
    width: 150px;
    margin: 0 25px;
    position: relative;
}

.bar > div {
    width: 100%;
    position: absolute;
    background: teal;
}

.label {
    font-family: Helvetica, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1em;
    stroke: #fff;
    fill: #fff;
    text-anchor: middle;
    cursor: pointer;
}

.map {
    position:relative;
    height:400px;
}
.number {
    text-anchor: middle;
    fill: #333;
    cursor: pointer;
}