#map {
height: 1000px; 
}

div.center {
margin-left: auto;
margin-right: auto;
}

.legend {
    width: 100%;
    padding: 6px 8px;
    font: 14px/16px Arial, Helvetica, sans-serif;
    background: white;
    background: rgba(255,255,255,0.8);
    box-shadow: 0 0 15px rgba(0,0,0,0.2);
    border-radius: 5px;
    line-height: 18px;
    color: #555;
    text-align: left;
}

.legend i {
    width: 18px;
    height: 18px;
    float: left;
    margin-right: 8px;
    opacity: 0.7;
}

.legend h4 {
    margin: 0 0 5px;
    color: #777;
    text-align: center;
}