Update index.html

index.html

@@ -23,10 +23,10 @@
             min-height: 100vh;
         }
         .container {
-            max-width: 1200px;
-            margin: 0 auto;
-            padding: 20px;
+            width: 100%;
             flex-grow: 1;
+            display: flex;
+            flex-direction: column;
         }
         header {
             background-color: white;
@@ -40,9 +40,9 @@
         }
         .graph-container {
             width: 100%;
-            height: 70vh;
-            margin: 20px 0;
-            border: 1px solid var(--secondary-color);
+            flex-grow: 1;
+            min-height: 70vh;
+            border: none;
         }
         footer {
             background-color: var(--secondary-color);