diff --git a/index.html b/index.html
index 76254c13..12714fbd 100644
--- a/index.html
+++ b/index.html
@@ -20,7 +20,7 @@
   </head>
 
   <body>
-    <div class="header">
+    <header>
 
         <a href="#">
           <img
@@ -31,7 +31,7 @@
         </a>
 
         <div>
-          <ul class="navigation__list">
+          <nav class="navigation__list">
             <li class="navigation__item">
               <a class="navigation__link" href="#">Home</a>
             </li>
@@ -44,15 +44,14 @@
             <li class="navigation__item">
               <a class="navigation__link" href="#">Contact Us</a>
             </li>
-          </ul>
-        </div>
+          </nav>          
+        </div>       
+        <button class="button" id="donate_button">Donate Now</button> 
 
-        <button>Donate Now</button>
-
-    </div>
+    </header>
 
     <div class="content">
-        <div class="main">
+        <main>
           <div 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>
@@ -64,16 +63,15 @@ <h1>Bikes for Refugees</h1>
               Providing donated bikes and accessories to refugees and asylum
               seekers in Scotland.
             </p>
-            <button>Donate a bike today</button>
-            <button>Volunteer</button>
+            <button class="button" id="donate_a_bike">Donate a bike today</button>
+            <button class="button" id="volunteer">Volunteer</button>
           </div>
-
           <div>
             <h2 class="heading-underline">Learn more</h2>
 
-            <div>
-              <div class="article">
-                <h3 class="article__title">Why do refugees need bikes?</h3>
+            <div class="articles">
+              <article>
+                <h3 class="article__title">Why do refugees need bikes?</br></h3>
                 <p class="article__summary">
                   Many refugees are placed in housing in areas where there are
                   few jobs. Bikes provide low-cost transportation so that they
@@ -85,9 +83,9 @@ <h3 class="article__title">Why do refugees need bikes?</h3>
                     Learn more
                   </a>
                 </p>
-              </div>
+              </article>              
 
-              <div class="article">
+              <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
@@ -100,19 +98,19 @@ <h3 class="article__title">How can I help?</h3>
                     Learn more
                   </a>
                 </p>
-              </div>
+              </article>
             </div>
           </div>
-        </div>
+        </main>
 
-        <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="spring-fundraisers_thumbnail"
             />
             <div class="article__content">
               <h3 class="article__title">
@@ -123,26 +121,26 @@ <h3 class="article__title">
                 Médecins Sans Frontières.
               </p>
             </div>
-          </div>
+          </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_logo"
             />
             <div 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>
+          </article>
 
-          <div class="article">
+          <article class="article">
             <img
               class="article__thumbnail"
-              src="edinburgh-damascus_thumbnail.png"
-              alt=""
+              src="images/edinburgh-damascus_thumbnail.png"
+              alt="edinburgh-damascus_thumbnail"
             />
             <div class="article__content">
               <h3 class="article__title">
@@ -153,7 +151,7 @@ <h3 class="article__title">
                 to Damascus.
               </p>
             </div>
-          </div>
+          </article>        
 
           <a
             href="https://www.facebook.com/BikesforRefugeesScotland/events/?ref=page_internal"
@@ -163,10 +161,10 @@ <h3 class="article__title">
             <span class="fa fa-facebook-square"></span>
             All Facebook events
           </a>
-        </div>
+        </aside>
     </div>
 
-    <div class="footer">
+    <footer class="footer">
       <div class="footer__content">
         <p>
           <strong>Bikes for Refugees Scotland is a volunteer-led project to help
@@ -174,6 +172,6 @@ <h3 class="article__title">
         </p>
         <p>Website by Code Your Future</p>
       </div>
-    </div>
+    </footer>
   </body>
 </html>
diff --git a/styles/style.css b/styles/style.css
index 4d1c088e..7c6a47dc 100644
--- a/styles/style.css
+++ b/styles/style.css
@@ -56,6 +56,9 @@ p {
 .header__logo {
   max-height: 90px;
   width: auto;
+  position: relative;  
+  top: 50px;
+  left: 70px;
 }
 
 /* Navigation */
@@ -63,10 +66,11 @@ p {
 .navigation__list {
   display: flex;
   list-style: none;
+  margin-left: 35%  
 }
 
 .navigation__item {
-  padding: 0.5rem 0;
+  padding-right: 2rem;
 }
 
 .navigation__link {
@@ -76,6 +80,10 @@ p {
   text-decoration: none;
 }
 
+.navigation__link:hover {
+  color: var(--orange-dark);
+}
+
 
 /* Text styles */
 
@@ -94,8 +102,43 @@ p {
 
 
 /* Buttons */
+ 
+  .button{
+    background-color: var(--orange-dark);
+    color: var(--white); 
+    padding: 0.5rem 1rem;
+    border: none;  
+    border-radius: 4px;
+    text-decoration: none;
+    font-weight: 400;
+    text-align: center;    
+  }  
+ 
+  .button:hover {
+    background-color: var(--orange-light);
+    color: var(--orange-dark);
+  }
 
-  /* INSERT BUTTON STYLES HERE */
+  #donate_button {
+    margin-left: 85%; 
+    top: -2rem;    
+    position: relative;  
+  }
+  
+  #donate_a_bike {
+    margin-left: 4%;
+  }
+
+  #volunteer {
+    background-color: var(--white);
+    color: var(--orange-dark);    
+  }
+  
+  #volunteer:hover {
+    background-color: var(--orange-dark);
+    color: var(--white);
+  }
+    
 
 
 /* Content */
@@ -115,23 +158,36 @@ p {
   line-height: 1.3;
   padding: 1.5rem 1rem;
   margin-bottom: 2rem;
+  margin-right: 2rem;
 }
 
 /* hero */
 
 .hero {
-  background-image: url("header-bike.jpg");
-  background-color: var(--grey-light);
+  background-image: url("../images/header-bike.jpg");    
+  height: 20rem;
+  background-size: cover;
+  background-repeat: no-repeat; 
+  padding: 5px;
+  margin-bottom: 5rem;
+  margin-right: 2rem;
 }
 
 .hero h1 {
   margin-bottom: 1rem;
   font-size: 2.5rem;
+  color: var(--white);
+  padding-top: 10%;
+  padding-left: 2rem;
+  
 }
 
 .hero p {
   font-size: 1.2rem;
   margin-bottom: 2rem;
+  color: var(--white);
+  padding-left: 2rem;
+
 }
 
 
@@ -145,6 +201,8 @@ p {
   font-size: 1rem;
   font-weight: 600;
   text-transform: uppercase;
+  margin-right: 2rem;
+  
 }
 
 .heading-underline:before {
@@ -162,7 +220,21 @@ p {
 /* Article */
 
 .article {
-  margin-bottom: 1rem;
+  margin-bottom: 1rem;  
+  padding: 1rem;
+  border: 1px solid var(--grey-light);
+  display: flex;
+  font-size: 14px;
+}
+.articles {
+  display: flex; 
+  margin-right: 1rem;   
+}
+
+.articles > article {
+  border: 1px solid var(--grey-light); 
+  margin-right: 1rem;
+  padding: 1rem;
 }
 
 .article__title {
@@ -183,7 +255,8 @@ p {
 
 .article__thumbnail {
   object-fit: contain;
-  width: 5rem;
+  width: 5rem;  
+  margin-right: 2rem;
 }
 
 .article__read-more {
@@ -209,6 +282,7 @@ p {
 
 .facebook-link {
   color: var(--orange-dark);
+  text-align: right;
 }
 
 /* Sidebar */
