Fix: design and few function

src/app/(main)/settings/set_txn_limit/page.tsx

@@ -224,7 +224,7 @@ export default function SetTransactionLimit() {
     };
 
     return (
-        <Paper shadow="sm" radius="md" p="md" withBorder h={400}>
+        <Paper shadow="sm" radius="md" p="md" withBorder h={500}>
             <Title order={3} mb="sm">
                 Set Transaction Limit
             </Title>
@@ -237,9 +237,13 @@ export default function SetTransactionLimit() {
                         value={limit}
                         onChange={(e) => {
                             const val = e.currentTarget.value;
-                            // Only allow digits
+
+                            // Allow only digits AND max value 500000
                             if (/^\d*$/.test(val)) {
-                                setLimit(val);
+                                const num = Number(val);
+                                if (num <= 500000) {
+                                    setLimit(val);
+                                }
                             }
                         }}
                         leftSection={icon}
@@ -247,6 +251,7 @@ export default function SetTransactionLimit() {
                         mb="sm"
                         readOnly={step !== "form"}
                     />
+
                 </Group>
                 {dailyLimit !== null ? (
                     <Text size="xs" c="green">