diff --git a/index.html b/index.html
index 7ec95fb3ce517842ad6f958054224332b79b66c5..06e7c29db33e33325991e366cd9f486d91226e35 100644
--- a/index.html
+++ b/index.html
@@ -9,7 +9,7 @@
     </head>
     <body onload="">
         <header>
-            <img class="nasa-img" src="img/nasa.png" />
+            <img class="nasa-img" src="img/nasa.png" alt="" />
 
             <nav>
                 <ul class="top-nav">
@@ -23,10 +23,10 @@
                     <li>
                         <form class="search-form" method="post" accept-charset="UTF-8">
                             <input type="search" placeholder="Search" />
-                            <input type="button" />
+                            <input type="button" value="" />
                         </form>
                     </li>
-                    <li><img src="img/share_icon.png" /></li>
+                    <li><img src="img/share_icon.png" alt="" /></li>
                 </ul>
             
                 <ul class="center-nav">
@@ -49,7 +49,7 @@
                     <div class="article-content-container">
                         <a class="article-link" href="#"></a>
 
-                        <img id="slide-image" class="article-image" src="img/nasa_news_1.jpg" />
+                        <img id="slide-image" class="article-image" src="img/nasa_news_1.jpg"  alt="" />
 
                         <div class="article-content">
                             <div id="slide-container" class="news-headline">
@@ -58,7 +58,7 @@
                             </div>
     
                             <div class="camera-triangle"></div>
-                            <img class="camera-img" src="img/camera.png" />
+                            <img class="camera-img" src="img/camera.png" alt="" />
                         </div>
                     </div>
                 </div>
@@ -96,7 +96,7 @@
                     <div class="article-content-container">
                         <a class="article-link" href="#"></a>  
 
-                        <img class="article-image" src="img/astronaut.jpg"></img>
+                        <img class="article-image" src="img/astronaut.jpg" alt="" />
 
                         <div class="article-content overlay">
                             <h4 class="overlay-title">Expedition 48</h4>
@@ -110,7 +110,7 @@
                     <div class="article-content-container">
                         <a class="article-link" href="#"></a>  
 
-                        <img class="article-half-image" src="img/nasa_launch.jpg"></img>
+                        <img class="article-half-image" src="img/nasa_launch.jpg" alt="" />
 
                         <div class="article-triangle"></div>
 
@@ -145,7 +145,7 @@
                     <div class="article-content-container">
                         <a class="article-link" href="#"></a>  
 
-                        <img class="article-image" src="img/ocean_worlds.jpg"></img>
+                        <img class="article-image" src="img/ocean_worlds.jpg" alt="" />
                     </div>
                 </div>
             </article>
@@ -154,10 +154,10 @@
                     <div class="article-content-container">
                         <a class="article-link" href="#"></a> 
 
-                        <img class="article-image article-image-full" src="img/tweet.png"></img>
+                        <img class="article-image article-image-full" src="img/tweet.png" alt="" />
                     </div>
                 </div>
             </article>
-        </section>
+        </main>
     </body>
 </html>
\ No newline at end of file