app/assets/stylesheets/map.css
.custom_marker_content {
background-color: #ffffff;
font-size: 150%;
border-style: solid;
border-radius: 5px;
padding-top: 5px;
padding-right: 5px;
padding-bottom: 5px;
padding-left: 5px;
}
.custom_infowindow_content {
background-color: #ffffff;
font-size: 150%;
border-style: solid;
border-radius: 5px;
padding-top: 5px;
padding-right: 5px;
padding-bottom: 5px;
padding-left: 5px;
text-align: center;
}