Added 2 new rules in bstackdemo site (#43)

Co-authored-by: Pooja0504 <jadhavpoojasopan>

Author: Pooja0504

src/components/App/index.jsx

@@ -57,7 +57,7 @@ class App extends Component {
         <Header />
         <main style={{ padding: "20px 2%", margin: "0 auto" }}>
           <a href="#" >
-            <img className="m-auto h-56 " alt="banner main" style={{minWidth: '650px', minHeight: '260px'}} src={require(`../../../public/static/banner3.png`)} />
+            <img className="m-auto h-56 " alt="banner main" style={{minWidth: '750px', minHeight: '280px'}} src={require(`../../../public/static/banner3.png`)} />
           </a>
           <Shelf />
         </main>

src/components/Newsletter/index.jsx

@@ -1,4 +1,5 @@
 import React from "react";
+import './style.scss';
 
 const Newsletter = () => {
   return (
@@ -7,7 +8,7 @@ const Newsletter = () => {
       <input
         id="newsletter-email"
         name="email-addr"
-        className="border border-gray-300 rounded-md p-2 mx-2"
+        className="inputClr border border-gray-300 p-2 mx-2"
         type="email"
         placeholder="Email"
         required

src/components/Newsletter/style.scss

@@ -0,0 +1,3 @@
+.inputClr {
+  color: #969d9f;
+}