Fix column width in GST Tax Breakup (#10230)

diff --git a/erpnext/templates/includes/itemised_tax_breakup.html b/erpnext/templates/includes/itemised_tax_breakup.html
index 342ce6b..2ffc8b4 100644
--- a/erpnext/templates/includes/itemised_tax_breakup.html
+++ b/erpnext/templates/includes/itemised_tax_breakup.html
@@ -2,14 +2,12 @@
 	<table class="table table-bordered table-hover">
 		<thead>
 			<tr>
-				{% set i = 0 %}
 				{% for key in headers %}
-					{% if i==0 %}
+					{% if loop.first %}
 						<th style="min-width: 120px;" class="text-left">{{ key }}</th>
 					{% else %}
 						<th style="min-width: 80px;" class="text-right">{{ key }}</th>
 					{% endif %}
-					{% set i = i + 1 %}
 				{% endfor%}
 			</tr>
 		</thead>