.legend {
background-color: #fff;
border-radius: 3px;
bottom: 10px;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
/*font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif; */
padding: 10px;
position: absolute;
left: 10px;
max-height: calc(100% - 230px);
z-index: 1;
overflow: auto;
}

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

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

.showlegend {
background-color: #fff;
border-radius: 3px;
bottom: 10px;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
height: 30px;
width: 30px;
padding: 10px;
position: absolute;
left: 10px;
z-index: 1;
}