Accepted answer

Well, good people, I kinda figured it out myself... for the possible benefit of others; my solution was to set the width of the two first columns fixed (or rather; max-width), and thereby using calc to calculate the size of the third columns with minus the two fixed width divs.

  width: -webkit-calc(98% - 520px);
 width: calc(98% - 520px);

For the Highchart part of the question, much thanks to @Pawel for prompt answer. I haven´t entirely worked it out, as we are currently discussing whether using Highcharts or not is the way to go. If so, I guess I might be back with more questions later.


Highcharts will resize only when window is resized, if you want to resize chart use chart.setSize(w,h), see reference.

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