style.css

.map {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
}

.map-overlay-search {
    position: relative;
    font: 14px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
    background: rgba(255, 255, 255, 0.8);
    top: 0;
    left: 0;
    width: 260px;
    margin: 10px 0 0 10px;
    padding: 10px;
    overflow: visible;
}

.geocoder {
    position: relative;
    margin: 10px 0 10px;
}

#returnbutton {
    position: relative;
    margin: 10px 0 10px;
    width: 100%;
}

.map-overlay-data {
    position: relative;
    font: 14px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
    background: rgba(255, 255, 255, 0.8);
    width: 260px;
    top: 0;
    left: 10px;
    margin-top: 10px;
    padding: 10px;
    overflow: visible;
}

.legend {
    position: absolute;
    display: block;
    background-color: #fff;
    border-radius: 3px;
    bottom: 0;
    margin-bottom: 30px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
    padding: 10px;
    right: 10px;
    z-index: 1;
}

.legend h4 {
    margin: 0 0 10px;
}

.legend-key {
    display: inline-block;
    border-radius: 50%;
    height: 10px;
    width: 10px;
    margin-right: 5px; 
}