Add QuickTrainSpace dashboard banner and update refresh button color

This commit implements the "QuickTrainSpace" feature on the dashboard, allowing general users to easily access and train their models. Additionally, the refresh button color has been changed from red to blue to improve visual consistency. The update aims to enhance convenience and efficiency in model training for our application.

frontend/src/pages/dashboard.tsx

@@ -39,7 +39,7 @@ const Dashboard = () => {
               primaryAction={{
                 component: (
                   <Button
-                    color="red"
+                    color="blue"
                     size="md"
                     iconEnd="refresh"
                     text="Refresh"
@@ -104,17 +104,42 @@ const Dashboard = () => {
 
 const BlankGrid = () => {
   const router = useRouter();
+
   return (
     <div id="blank-grid-wrapper">
-      <div id="blank-grid">
-        <p>
-          You haven't trained any models yet. Create your first model below!
+      <div
+        id="blank-grid"
+        style={{
+          backgroundColor: "#001F3F",
+          padding: "20px",
+          borderRadius: "4px",
+          boxShadow: "0 4px 8px rgba(0, 0, 0, 0.2)",
+          color: "#FFFFFF",
+          fontWeight: "bold",
+          position: "relative",
+        }}
+      >
+        <p style={{ color: "#FFFFFF" }}>
+          Introducing Quick TrainSpace: The beginner-friendly way to understand
+          your data and train models with ease!
         </p>
         <button
           id="blank-grid-button"
           onClick={() => router.push({ pathname: "/train" })}
+          style={{
+            backgroundColor: "#FFFFFF",
+            color: "#001F3F",
+            padding: "10px 20px",
+            borderRadius: "4px",
+            fontWeight: "bold",
+            cursor: "pointer",
+            border: "none",
+            outline: "none",
+            boxShadow: "0 2px 4px rgba(0, 0, 0, 0.2)",
+            transition: "background-color 0.3s ease",
+          }}
         >
-          Train Model
+          Use Quick TrainSpace today!
         </button>
       </div>
     </div>