Changed height and width calculations for cross browser support
Changed height and width calculations for cross browser support

gionkunz/chartist-js,cr3ative/chartist-js,cr3ative/chartist-js,hansmaad/chartist-js,hansmaad/chartist-js,chartist-js/chartist,gionkunz/chartist-js,chartist-js/chartist,chartist-js/chartist