Please try adding this to the end of the sliders footer:
<script>
$(document).ready(function(){
// Parameters
var leftLabel = '0';
var rightLabel = '100';
// Run
$('#[% QuestionName() %]_div .slider').each(function(){
$(this).before('<span>' + leftLabel + '</span>');
$(this).after('<span>' + rightLabel + '</span>');
});
})
</script>
<style>
#[% QuestionName() %]_div .input_cell {
display: flex;
}
#[% QuestionName() %]_div .slider {
flex-grow: 1;
margin-left: 16px;
margin-right: 32px;
}
</style>
Lines 4 and 5 should be updated with the labels to display on each side. I just eyeballed those two margin values - feel free to adjust them to your liking.