Update index.html

index.html

@@ -24,7 +24,7 @@ <h1>Tax Calculator</h1>
         <label for="age">Enter Age group:</label>
         <div class="input-container">
             <select id="age" name="age" required>
-                <option value="age"> </option>
+                <option value="age"> Enter Age group</option>
                 <option value="<40">&lt; 40</option>
                 <option value=">=40&<60">&ge; 40 &lt; 60</option>
                 <option value=">=60">&ge; 60</option>