Update app.py

app.py

@@ -1,22 +1,20 @@
 import gradio as gr
 
 css = """
-#main-area {
-    background-color: #111;
+body, html {
+    margin: 0;
+    padding: 0;
     height: 100%;
-    width: 100%;
+    background-color: #111;
+}
+#main-area {
+    height: 100vh;
     display: flex;
+    flex-direction: column;
     justify-content: center;
     align-items: center;
-    flex-direction: column;
-    padding-top: 80px; /* chống đụng phần header Hugging Face */
-}
-
-#main-area h2 {
     color: white;
-    margin-bottom: 20px;
 }
-
 .button-link {
     background-color: #007bff;
     color: white;
@@ -24,13 +22,14 @@ css = """
     text-decoration: none;
     border-radius: 6px;
     font-size: 16px;
+    margin-top: 20px;
 }
 """
 
 with gr.Blocks(css=css) as app:
     gr.HTML("""
     <div id="main-area">
-        <h2>OptionStrat Flow</h2>
+        <h1 style="margin-bottom: 10px;">OptionStrat Flow</h1>
         <a class="button-link" href="https://optionstrat.com/flow" target="_blank" rel="noopener noreferrer">
             Truy cập Option Flow
         </a>