highcharts - Extending Area to full width of Chart with Months on x-axis -

I have this chart:

As you can see How can I apply the plotted areas to get the full width of the location chart located on the left and right sides of the two plot areas?

  $ ('# container'). High Chart ({chart: {type: 'area', plotBackgroundColor: '# 00B 417'}, XXIS: {categories: ['March', 'April', 'May', 'Jun', 'Jul', 'August ',' September ',' Akth ',' Nov '], ... ..    
 
 
 You can assign a minimum / maximum value to xaxis:  
  xx: {Categories: ['March', 'April', 'May', 'Jun', 'Jul' , 'August', 'September', 'Akt', 'Nov'], EndOnTick: Wrong, CurrentText: Incorrect, Min: 0.5, Max: 7.5},   
 Update Belal.