mapnik.mapcss

<?xml version="1.0"?>
<!DOCTYPE Map>
<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over" background-color="#0055ff">

<!-- Coastlines -->
<!-- Download Land Polygons (Large polygons split, Simplified not split) from http://openstreetmapdata.com/data in Mercator projection and unzipped in data/. -->
    <Style name="coastpoly">
        <Rule>
            <PolygonSymbolizer fill="#f2efd9" />
        </Rule>
    </Style>

    <Layer srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over" maxzoom="1500001" >
        <StyleName>coastpoly</StyleName>
        <Datasource>
            <Parameter name="type">shape</Parameter>
            <Parameter name="file">data/land-polygons-split-3857/land_polygons.shp</Parameter>
        </Datasource>
    </Layer>

<!-- MapCSS style definition -->
    <style type='text/mapcss'>
@import highway.mapcss
@import railway.mapcss
@import pipeline.mapcss
@import boundary.mapcss
@import waterway.mapcss
@import nature.mapcss
@import urban.mapcss

    </style>
</Map>