sample.kml

<?xml version="1.0" encoding="utf-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
  <Document>
    <Style id="globalStyles">
      <LineStyle id="line">
        <color>7f0000ff</color>
        <width>4</width>
      </LineStyle>
    </Style>
      <Placemark>
        <name>runway</name>
        <styleUrl>#globalStyles</styleUrl>
        <Style>
          <LineStyle>
            <!--
            Coloring is implicitly merged from the global style, width is
            explicitly overridden.
            -->
            <width>10</width>
          </LineStyle>
        </Style>
        <LineString>
          <tessellate>1</tessellate>
          <coordinates>-14.405821,-7.963539 -14.381448,-7.975707</coordinates>
        </LineString>
      </Placemark>
  </Document>
</kml>