Adiciona o footer desktop e mobile

assets/styles/main.css

@@ -150,9 +150,34 @@ body {
   line-height: 24px;
 }
 
+.page-footer {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding: 38px 0;
+  background: #000000;
+}
+
+.footer-icons {
+  display: flex;
+  list-style: none;
+  margin-bottom: 16px;
+}
+
+.footer-icon {
+margin: 0 8px;
+}
+
+.footer-text {
+  font-size: 10px;
+  line-height: 12px;
+  text-transform: uppercase;
+  color: #BDBDBD;
+}
+
 .bottom-infocard {
-flex-direction: column;
-padding: 80px 0 136px;
+  flex-direction: column;
+  padding: 80px 0 136px;
 }
 
 .bottom-infocard-image {
@@ -166,7 +191,7 @@ padding: 80px 0 136px;
 }
 
 .bottom-infocard-title {
-  font-size: 24px;  
+  font-size: 24px;
 }
 
 
@@ -206,6 +231,16 @@ padding: 80px 0 136px;
     font-size: 14px;
   }
 
+  ..page-footer {
+    padding-bottom: 26px;
+    }
+
+    .footer-text {
+      max-width: 280px;
+      text-align: center;
+    }
+
+
 }
 
 @media screen and (max-width: 992px) {

index.html

@@ -143,6 +143,33 @@
             </div>
         </section>
     </main>
+
+    <footer class="page-footer">
+        <ul class="footer-icons">
+
+            <li class="footer-icon">
+                <a href="#" target="_blank">
+                    <img src="/assets/images/instagram-icon.png" alt="ícone do Instagram" />
+                </a>
+            </li>
+
+            <li class="footer-icon">
+                <a href="#" target="_blank">
+                    <img src="/assets/images/facebook-icon.png" alt="ícone do Facebook" />
+                </a>
+
+            </li>
+            <li class="footer-icon">
+                <a href="#" target="_blank">
+                    <img src="/assets/images/youtube-icon.png" alt="ícone do Youtube" />
+                </a>
+            </li>
+        </ul>
+
+        <p class="footer-text">
+            Copyright © 2020 - Loja Comércio Eletrônico CNPJ: 000.000.000/0001-00
+        </p>
+    </footer>
 </body>
 
 </html>