gh maps: improve vehicle button style for chrome
gh maps: improve vehicle button style for chrome

graphhopper/graphhopper,boldtrn/graphhopper,fbonzon/graphhopper,graphhopper/graphhopper,fbonzon/graphhopper,don-philipe/graphhopper,fbonzon/graphhopper,graphhopper/graphhopper,boldtrn/graphhopper,fbonzon/graphhopper,boldtrn/graphhopper,graphhopper/graphhopper,don-philipe/graphhopper,boldtrn/graphhopper,don-philipe/graphhopper,don-philipe/graphhopper