This example shows how to use the conicConformalEurope projection from d3-composite-projections.
Modified http://d3js.org/d3.v3.min.js to a secure url
Modified http://d3js.org/topojson.v1.min.js to a secure url
Updated missing url https://cdnjs.cloudflare.com/ajax/libs/d3-composite-projections/0.3.5/conicConformalEurope-proj.min.js to https://cdnjs.cloudflare.com/ajax/libs/d3-composite-projections/0.3.5/conicconformaleurope-proj.min.js
https://d3js.org/d3.v3.min.js
https://d3js.org/topojson.v1.min.js
https://cdnjs.cloudflare.com/ajax/libs/d3-composite-projections/0.3.5/conicConformalEurope-proj.min.js