diff --git a/app/api/routes/llm.py b/app/api/routes/llm.py
index be13717..b1be4b9 100644
--- a/app/api/routes/llm.py
+++ b/app/api/routes/llm.py
@@ -25,7 +25,7 @@ async def llm_food_extractor_page(request: Request):
 class FoodItem(BaseModel):
     name: Optional[str] = Field(None, description="Name of the food item")
     brand: Optional[str] = Field(None, description="Brand name of the food item")
-    serving_size_g: float = Field(description="Actual serving size in grams as labeled on the page")
+    serving_size_g: Optional[float] = Field(None, description="Actual serving size in grams as labeled on the page")
     calories: Optional[int] = Field(None, description="Calories per actual serving")
     protein_g: Optional[float] = Field(None, description="Protein in grams per actual serving")
     carbohydrate_g: Optional[float] = Field(None, description="Carbohydrates in grams per actual serving")
@@ -88,7 +88,7 @@ async def extract_food_data_from_llm(
        "cholesterol_mg": "integer"
      }
 
-     The food name is usually the most prominent header or title on the page. Brand is the manufacturer or brand name if available. serving_size_g should be the actual grams for the serving size shown (e.g., 240 for 1 cup). If the food name is not available, set it to "unknown". If any of the nutritional values are not available, set them to null. Do not include any text or explanations outside of the JSON object in your response.
+     The food name is usually the most prominent header or title on the page. Brand is the manufacturer or brand name if available. serving_size_g should be the actual grams for the serving size shown (e.g., 240 for 1 cup). If any of the fields are not available, set them to null. Do not include any text or explanations outside of the JSON object in your response.
      """
     messages = [{"role": "system", "content": prompt}]
 
diff --git a/playwright-report/index.html b/playwright-report/index.html
index 4482fc7..13e2720 100644
--- a/playwright-report/index.html
+++ b/playwright-report/index.html
@@ -73,4 +73,4 @@ Error generating stack: `+u.message+`
     <div id='root'></div>
   </body>
 </html>
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</script>
\ No newline at end of file
diff --git a/templates/charts.html b/templates/charts.html
index afae7be..944548e 100644
--- a/templates/charts.html
+++ b/templates/charts.html
@@ -29,7 +29,7 @@
                 <div class="card-header">
                     <h5 class="mb-0">Calories Consumed</h5>
                 </div>
-                <div class="card-body p-2 h-100">
+                <div class="card-body p-2 h-100" id="chartContainer">
                     <div class="position-relative h-100">
                         <canvas id="caloriesChart" class="w-100 h-100"></canvas>
                     </div>
@@ -43,11 +43,23 @@
 <script>
     let chart;
 
+    function resizeChart() {
+        const container = document.getElementById('chartContainer');
+        if (container) {
+            const rect = container.getBoundingClientRect();
+            container.style.height = (window.innerHeight - rect.top) + 'px';
+        }
+    }
+
     document.addEventListener('DOMContentLoaded', function() {
         const daysSelect = document.getElementById('daysSelect');
         const loadBtn = document.getElementById('loadChartBtn');
         const ctx = document.getElementById('caloriesChart').getContext('2d');
 
+        // Resize chart container to fit viewport
+        resizeChart();
+        window.addEventListener('resize', resizeChart);
+
         // Default load for 7 days
         loadChart(7);
 
@@ -70,6 +82,9 @@
                         chart.destroy();
                     }
 
+                    // Resize container before creating chart
+                    resizeChart();
+
                     chart = new Chart(ctx, {
                         type: 'line',
                         data: {
diff --git a/test-results/.last-run.json b/test-results/.last-run.json
index d5c04b3..8d4dea9 100644
--- a/test-results/.last-run.json
+++ b/test-results/.last-run.json
@@ -1,6 +1,10 @@
 {
   "status": "failed",
   "failedTests": [
-    "cbe50082e65e8e610128-6c81c1ca2919b3ea739f"
+    "cbe50082e65e8e610128-01a31121c730136c6d15",
+    "cbe50082e65e8e610128-767b088eecf866f99297",
+    "cbe50082e65e8e610128-6854fbd0cc9cc9ef829d",
+    "cbe50082e65e8e610128-6c81c1ca2919b3ea739f",
+    "cbe50082e65e8e610128-7b77006eb848453f9ee9"
   ]
 }
\ No newline at end of file
diff --git a/tests/6_llm_extraction.spec.js b/tests/6_llm_extraction.spec.js
index 1b146e9..68f3bbc 100644
--- a/tests/6_llm_extraction.spec.js
+++ b/tests/6_llm_extraction.spec.js
@@ -187,4 +187,58 @@ test.describe('LLM Food Extraction', () => {
     // Verify save was attempted (mocked, so no actual redirect)
     // In a real test, you might check for a success message or redirect
   });
+
+  test('should handle null fields from LLM extraction', async ({ page }) => {
+    await page.goto('/llm');
+
+    // Fill in the webpage URL
+    await page.fill('#webpageUrl', 'https://example.com/recipe');
+
+    // Mock the API response with nulls
+    await page.route('/llm/extract', route => {
+      route.fulfill({
+        status: 200,
+        contentType: 'application/json',
+        body: JSON.stringify({
+          name: null,
+          brand: null,
+          serving_size_g: null,
+          calories: null,
+          protein_g: null,
+          carbohydrate_g: null,
+          fat_g: null,
+          fiber_g: null,
+          sugar_g: null,
+          sodium_mg: null,
+          calcium_mg: null,
+          potassium_mg: null,
+          cholesterol_mg: null
+        }),
+      });
+    });
+
+    // Submit the form
+    await page.click('button[type="submit"]');
+
+    // Verify the result container is visible
+    const resultContainer = page.locator('#resultContainer');
+    await expect(resultContainer).toBeVisible();
+
+    // Verify the raw JSON is rendered
+    const extractedJson = page.locator('#extractedJson');
+    await expect(extractedJson).toContainText('null');
+
+    // Verify editable form fields are blank for null values
+    await expect(page.locator('#foodName')).toHaveValue('');
+    await expect(page.locator('#foodBrand')).toHaveValue('');
+    await expect(page.locator('#servingSizeG')).toHaveValue('');
+    await expect(page.locator('#calories')).toHaveValue('');
+    await expect(page.locator('#proteinG')).toHaveValue('');
+    await expect(page.locator('#carbohydrateG')).toHaveValue('');
+    await expect(page.locator('#fatG')).toHaveValue('');
+    await expect(page.locator('#fiberG')).toHaveValue('');
+    await expect(page.locator('#sugarG')).toHaveValue('');
+    await expect(page.locator('#sodiumMg')).toHaveValue('');
+    await expect(page.locator('#calciumMg')).toHaveValue('');
+  });
 });
\ No newline at end of file