High Chart change gauge needle to a triangle - highcharts

Question

I want to create a semi circle that contains a gauge embedded in it.
Example:Semi Circle Pie With Gauge
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/highcharts-more.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<div id="container" style="min-width: 310px; height: 400px; max-width: 600px; margin: 0 auto"></div>
$(function () {
$('#container').highcharts({
chart: {
renderTo: 'container',
plotBackgroundColor: null,
plotBackgroundImage: null,
plotBorderWidth: 0,
plotShadow: false
},
title: {
text: 'Browser<br>shares<br>2015',
align: 'center',
verticalAlign: 'top',
y: 40
},
tooltip: {
pointFormat: '{series.name}: <b>{point.percentage:.1f}%</b>'
},
pane: {
center: ['50%', '75%'],
size: '50%',
startAngle: -90,
endAngle: 90,
background: {
borderWidth: 0,
backgroundColor: 'none',
innerRadius: '60%',
outerRadius: '100%',
shape: 'arc'
}
},
yAxis: [{
lineWidth: 0,
min: 0,
max: 90,
minorTickLength: 0,
tickLength: 0,
tickWidth: 0,
labels: {
enabled: false
},
title: {
text: '', //'<div class="gaugeFooter">46% Rate</div>',
useHTML: true,
y: 80
},
/*plotBands: [{
from: 0,
to: 46,
color: 'pink',
innerRadius: '100%',
outerRadius: '0%'
},{
from: 46,
to: 90,
color: 'tan',
innerRadius: '100%',
outerRadius: '0%'
}],*/
pane: 0,
}],
plotOptions: {
pie: {
dataLabels: {
enabled: true,
distance: -50,
style: {
fontWeight: 'bold',
color: 'white',
textShadow: '0px 1px 2px black'
}
},
startAngle: -90,
endAngle: 90,
center: ['50%', '75%']
},
gauge: {
dataLabels: {
enabled: false
},
dial: {
radius: '100%'
}
}
},
series: [{
type: 'pie',
name: 'Browser share',
innerSize: '50%',
data: [
['Firefox', 25],
['IE', 25],
['Chrome', 25],
['Opera', 25]
]
},{
type: 'gauge',
data: [40],
dial: {
rearLength: 0
}
}],
});
});
I want to change the needle to become a pure css triangle.
Is there a way todo this?