.map {
    height: 400px;
    width: 100%;
}
/* from http://cssdeck.com/labs/bv45bh6p */
div.map-callout {
    min-height: 50px;
    width: 200px;
    float: left;
    left: -20px;
    top: 10px;
    background-color: #444;
    position: relative;
    color: #ccc;
    padding: 10px;
    border-radius: 3px;
    box-shadow: 0px 0px 20px #999;
    margin: 0px;
    border: 1px solid #333;
    border-radius: 5px;
    text-shadow: 0 0 1px #000;
}
.map-callout::before {
    content: "";
    width: 0px;
    height: 0px;
    border: 0.8em solid transparent;
    position: absolute;
}
.map-callout.map-callout-bottom::before {
    left: 5%;
    top: -20px;
    border-bottom: 10px solid #444;
}