cria o footer desktop e mobile

assets/style/main.css

@@ -79,6 +79,7 @@ body{
     font-size: 16px;
     line-height: 24px;
     text-align: center;
+    font-weight: 400;
 }
 .top-infocard-title{
     text-transform: uppercase;
@@ -219,7 +220,13 @@ body{
         grid-template-columns: 1fr 1fr;
         padding: 80px 24px 98px;
     }
-  
+    .page-footer{
+        padding-bottom: 26px;
+     }
+     .footer-text{
+        max-width: 280px;
+        text-align: center;
+     }
   }
 
 .bottom-text{
@@ -242,4 +249,45 @@ body{
     font-size: 16px;
     line-height: 24px;
     text-align: center;
+}
+.bottom-banner-desktop {
+    display: block;
+    width: 71%;
+    text-align: center;
+    left: 220px;
+    
+    
+  }
+  .bottom-banner-mobile{
+    display: none;   
+  }
+@media (max-width: 1024px) {
+  .bottom-banner-desktop {
+    display: none;
+  }
+  .bottom-banner-mobile {
+    display: block;
+    width: 100%;
+  }
+}
+.page-footer{
+    background-color: #000000;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    padding: 38px 0;
+}
+.footer-text{
+font-size: 10px;
+line-height: 12px;
+text-transform: uppercase;
+color: #BDBDBD;
+}
+.footer-icons {
+    display: flex;
+    list-style: none;
+    margin-bottom: 16px;
+}
+.footer-icon {
+  margin: 0 12px;   
 }

index.html

@@ -107,8 +107,34 @@
                 Ut tristique auctor mi eget hendrerit. Curabitur venenatis felis vitae sagittis venenatis. Donec finibus
                 turpis vitae lectus interdum rutrum vitae sed augue.</p>
         </div>
-
+    </section>
+    <section>
+        <img class="bottom-banner bottom-banner-desktop" src="assets/image/image-oculos-cortado.png" alt="banner secundário desktop" />
+        <img class="bottom-banner bottom-banner-mobile" src="assets/image/image-oculos-completo.png" alt="banner secundário mobile" />
     </section>
 </main>
+<footer class="page-footer">
+    <ul class="footer-icons">
+           <li class="footer-icon">
+                <a href="https://www.instagram.com/m3.ecommerce/" target="_blank">
+                    <img src="assets/image/instagram-icon.png" alt="Ícone do Instagram"/>
+                </a>
+            </li>
+            <li class="footer-icon">
+                <a href="https://pt-br.facebook.com/digitalm3/" target="_blank">
+                    <img src="assets/image/facebook-icon.png" alt="Ícone do Facebook"/>
+                </a>
+            </li>
+            <li class="footer-icon">
+                <a href="https://www.youtube.com/channel/UCW4o86gZG_ceA8CmHltXeXA" target="_blank">
+                    <img src="assets/image/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>