Reduce monthly graph font size

The font size of the monthly graph has been reduced.

src/pages/Analytics.tsx

@@ -1,3 +1,4 @@
+
 import React, { useState } from 'react';
 import NavBar from '@/components/NavBar';
 import ExpenseChart from '@/components/ExpenseChart';
@@ -131,12 +132,16 @@ const Analytics = () => {
           <h2 className="text-lg font-semibold mb-3">월별 그래프</h2>
           <div className="neuro-card h-72">
             <ResponsiveContainer width="100%" height="100%">
-              <BarChart data={monthlyData} margin={{
+              <BarChart 
+                data={monthlyData} 
+                margin={{
                   top: 20,
                   right: 10,
                   left: -10,
                   bottom: 5
-            }}>
+                }}
+                style={{ fontSize: '11px' }}
+              >
                 <XAxis dataKey="name" />
                 <YAxis tickFormatter={formatYAxisTick} />
                 <Tooltip formatter={formatTooltip} />