<style>
body, html {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    font-family: Arial;
}
#map {
    width: 100%;
    height: 60%;
}

#marker {
    background-image: url('images/marker.png');
    width: 33px;
    height: 36px;
    position: absolute;
}
.header {
    padding: 5px;
}
</style>
