diff --git a/index.html b/index.html
index 76254c13..2a180c24 100644
--- a/index.html
+++ b/index.html
@@ -20,7 +20,7 @@
   </head>
 
   <body>
-    <div class="header">
+    <header class="header">
 
         <a href="#">
           <img
@@ -30,7 +30,7 @@
           />
         </a>
 
-        <div>
+        <nav>
           <ul class="navigation__list">
             <li class="navigation__item">
               <a class="navigation__link" href="#">Home</a>
@@ -45,34 +45,34 @@
               <a class="navigation__link" href="#">Contact Us</a>
             </li>
           </ul>
-        </div>
+        </nav>
 
-        <button>Donate Now</button>
+        <button class="btn-primary">Donate Now</button>
 
-    </div>
+    </header>
 
-    <div class="content">
-        <div class="main">
-          <div class="alert">
+    <main class="content">
+        <section class="main">
+          <section class="alert">
             You've helped us give <span class="text-highlight">72</span> bikes
             to refugees and asylum seekers so far. <strong>Thank you!</strong>
-          </div>
+          </section>
 
-          <div class="hero">
+          <section class="hero">
             <h1>Bikes for Refugees</h1>
             <p>
               Providing donated bikes and accessories to refugees and asylum
               seekers in Scotland.
             </p>
-            <button>Donate a bike today</button>
-            <button>Volunteer</button>
-          </div>
+            <button class="btn-primary">Donate a bike today</button>
+            <button class="btn-secondary">Volunteer</button>
+          </section>
 
-          <div>
+          <section>
             <h2 class="heading-underline">Learn more</h2>
 
-            <div>
-              <div class="article">
+            <section class="articles">
+              <article class="article">
                 <h3 class="article__title">Why do refugees need bikes?</h3>
                 <p class="article__summary">
                   Many refugees are placed in housing in areas where there are
@@ -85,9 +85,9 @@ <h3 class="article__title">Why do refugees need bikes?</h3>
                     Learn more
                   </a>
                 </p>
-              </div>
+              </article>
 
-              <div class="article">
+              <article class="article">
                 <h3 class="article__title">How can I help?</h3>
                 <p class="article__summary">
                   We need lots of bikes and bike accessories! If you have an
@@ -100,21 +100,21 @@ <h3 class="article__title">How can I help?</h3>
                     Learn more
                   </a>
                 </p>
-              </div>
-            </div>
-          </div>
-        </div>
+              </article>
+            </section>
+          </section>
+        </section>
 
-        <div class="sidebar">
+        <aside class="sidebar">
           <h2 class="heading-underline">Upcoming events</h2>
 
-          <div class="article">
+          <article class="article">
             <img
               class="article__thumbnail"
-              src="spring-fundraisers_thumbnail.jpg"
-              alt=""
+              src="images/spring-fundraisers_thumbnail.jpg"
+              alt="Image of spring fundraisers event"
             />
-            <div class="article__content">
+            <section class="article__content">
               <h3 class="article__title">
                 <a class="article__title-link" href="#">Join us for our Spring fundraisers</a>
               </h3>
@@ -122,29 +122,29 @@ <h3 class="article__title">
                 Riders needed now to help raise awareness and funds for BfR and
                 Médecins Sans Frontières.
               </p>
-            </div>
-          </div>
+            </section>
+          </article>
 
-          <div class="article">
+          <article class="article">
             <img
               class="article__thumbnail"
-              src="bikes-for-refugees_logo.jpg"
-              alt=""
+              src="images/bikes-for-refugees_logo.jpg"
+              alt="Bikes for Refugees Scotland logo"
             />
-            <div class="article__content">
+            <section class="article__content">
               <h3 class="article__title">
                 <a class="article__title-link" href="#">Bike dropoff event in Edinburgh on May 11</a>
               </h3>
-            </div>
-          </div>
+            </section>
+          </article>
 
-          <div class="article">
+          <article class="article">
             <img
               class="article__thumbnail"
-              src="edinburgh-damascus_thumbnail.png"
-              alt=""
+              src="images/edinburgh-damascus_thumbnail.png"
+              alt="Cycling event from Edinburgh to Damascus"
             />
-            <div class="article__content">
+            <section class="article__content">
               <h3 class="article__title">
                 <a class="article__title-link" href="#">Help us cycle 4,797km</a>
               </h3>
@@ -152,8 +152,8 @@ <h3 class="article__title">
                 We need you to help us cycle 4797km, the distance of Edinburgh
                 to Damascus.
               </p>
-            </div>
-          </div>
+            </section>
+          </article>
 
           <a
             href="https://www.facebook.com/BikesforRefugeesScotland/events/?ref=page_internal"
@@ -163,17 +163,17 @@ <h3 class="article__title">
             <span class="fa fa-facebook-square"></span>
             All Facebook events
           </a>
-        </div>
-    </div>
+        </aside>
+      </main>
 
-    <div class="footer">
-      <div class="footer__content">
+    <footer class="footer">
+      <section class="footer__content">
         <p>
           <strong>Bikes for Refugees Scotland is a volunteer-led project to help
           people explore and make connections with their local communities.</strong>
         </p>
         <p>Website by Code Your Future</p>
-      </div>
-    </div>
+      </section>
+    </footer>
   </body>
 </html>
diff --git a/styles/style.css b/styles/style.css
index 4d1c088e..dfe4a1e7 100644
--- a/styles/style.css
+++ b/styles/style.css
@@ -66,7 +66,7 @@ p {
 }
 
 .navigation__item {
-  padding: 0.5rem 0;
+  padding: 0.5rem 1rem;
 }
 
 .navigation__link {
@@ -76,6 +76,10 @@ p {
   text-decoration: none;
 }
 
+.navigation__link:hover {
+  color: var(--orange-dark);
+}
+
 
 /* Text styles */
 
@@ -95,8 +99,35 @@ p {
 
 /* Buttons */
 
-  /* INSERT BUTTON STYLES HERE */
+.btn-primary {
+  background-color: var(--orange-dark);
+  color: var(--white);
+  bottom: none;
+  padding: 0.75rem 1.25rem;
+  font-weight: 600;
+  border-radius: 4px;
+  cursor:pointer;
+}
+
+.btn-secondary {
+  background-color: var(--grey-light);
+  color: var(--orange-dark);
+  bottom: none;
+  padding: 0.75rem 1.25rem;
+  font-weight: 600;
+  border-radius: 4px;
+  cursor:pointer;
+}
+
+.btn-primary:hover {
+  background-color: var(--white);
+  color: var(--orange-dark);
+}
 
+.btn-secondary:hover {
+  background-color: var(--orange-dark);
+  color: var(--white);
+}
 
 /* Content */
 
@@ -120,21 +151,26 @@ p {
 /* hero */
 
 .hero {
-  background-image: url("header-bike.jpg");
-  background-color: var(--grey-light);
+  background-image: url("../images/header-bike.jpg");
+  background-size: cover;
+  background-position: center;
+  background-repeat: no-repeat;
+  padding: 7rem 2rem;
+  margin-bottom: 3rem;
 }
 
 .hero h1 {
   margin-bottom: 1rem;
   font-size: 2.5rem;
+  color: var(--white);
 }
 
 .hero p {
   font-size: 1.2rem;
   margin-bottom: 2rem;
+  color: var(--white);
 }
 
-
 /* Headings */
 
 .heading-underline {
@@ -162,7 +198,10 @@ p {
 /* Article */
 
 .article {
-  margin-bottom: 1rem;
+  border: 1px solid var(--grey-light);
+  padding: 1rem;
+  border-radius: 4px;
+  background-color: var(--white);
 }
 
 .article__title {
@@ -219,6 +258,26 @@ p {
   min-width: 350px;
 }
 
+.sidebar .article {
+  display: flex;
+  align-items: flex-start;
+  margin-bottom: 1rem; /* space between each event box */
+}
+
+.sidebar .article__content {
+  margin-left: 1rem;
+}
+
+/* Social Media link */
+.facebook-link {
+  color: var(--orange-dark);
+  margin-top: 0rem; /* adds space above the link */
+  display: inline-block;
+  font-weight: 600;
+  text-decoration: underline;
+  text-align: right;
+}
+
 /* Footer */
 
 .footer {
@@ -247,4 +306,9 @@ p {
   .main {
     padding-right: 2rem;
   }
-}
+
+  .articles {
+    display:flex;
+    gap: 1rem; /* space between articles boxes */
+  }
+}
\ No newline at end of file
