Question

I have implemented a GoogleMapsV3 map in a twitterBootstrap basic responsive design site.

But my question is quite simple: i have:

<div id="map"></map>

and

#map{ width: 100%; height: 200px }

I’d like to be able to change the height to a form factor. Like in this “in my dreams CSS”

#map { width: 100%; height: width * 1.72 }

I have tried leaving out height, setting to auto, and all sorts of persentages – but only to make the div collapse on me always.

I have no problem writing a js-solution, but hope for a simple cleancut CSS solution, possible CSS3

If not possible, what would be the optimal way to js me out of this?? (timers, events…or the like)

Answer 1

For this, you will need to utilise JavaScript, or rely on the somewhat supported calc() CSS expression.

window.addEventListener("resize", function(e) {
    var mapElement = document.getElementById("map");
    mapElement.style.height = mapElement.offsetWidth * 1.72;
});

Or using CSS calc (see support here: http://caniuse.com/calc)

#map {
    width: 100%;
    height: calc(100vw * 1.72)
}