diff --git a/templates/zephyr/apps.html b/templates/zephyr/apps.html
index db2d9a7888..ee68c00a41 100644
--- a/templates/zephyr/apps.html
+++ b/templates/zephyr/apps.html
@@ -60,7 +60,7 @@
           <a href="https://humbughq.com/dist/apps/mac/Zulip-latest.dmg" class="btn btn-large btn-primary"><i class="icon-download icon-white"></i> Download Zulip for Mac</a>
         </p>
 
-        <img class="screenshot" src="/static/images/app-screenshots/humbug-desktop-mac.png">
+        <img class="full-width-screenshot" src="/static/images/app-screenshots/humbug-desktop-mac.png">
       </div>
 
       <div class="tab-pane" id="linux">
@@ -104,7 +104,7 @@ sudo apt-get install zulip-desktop
           <a href="https://humbughq.com/dist/apps/win/zulip-latest.exe" class="btn btn-large btn-primary"><i class="icon-download icon-white"></i> Download Zulip for Windows</a>
         </p>
 
-        <img class="screenshot" src="/static/images/app-screenshots/humbug-desktop-windows.png">
+        <img class="full-width-screenshot" src="/static/images/app-screenshots/humbug-desktop-windows.png">
       </div>
 
       <div class="tab-pane" id="plan9">
diff --git a/zephyr/static/images/app-screenshots/humbug-desktop-mac.png b/zephyr/static/images/app-screenshots/humbug-desktop-mac.png
index ee04253de0..6de22b4de1 100644
Binary files a/zephyr/static/images/app-screenshots/humbug-desktop-mac.png and b/zephyr/static/images/app-screenshots/humbug-desktop-mac.png differ
diff --git a/zephyr/static/images/app-screenshots/humbug-desktop-windows.png b/zephyr/static/images/app-screenshots/humbug-desktop-windows.png
index f5c2dd4655..ec13593c8a 100755
Binary files a/zephyr/static/images/app-screenshots/humbug-desktop-windows.png and b/zephyr/static/images/app-screenshots/humbug-desktop-windows.png differ
diff --git a/zephyr/static/styles/portico.css b/zephyr/static/styles/portico.css
index 805d8a1f6d..cfa6d51b95 100644
--- a/zephyr/static/styles/portico.css
+++ b/zephyr/static/styles/portico.css
@@ -125,6 +125,10 @@ img.screenshot{
     max-width: 150%;
 }
 
+.full-width-screenshot {
+    width: 100%;
+}
+
 .little-bullet {
     /* In our footer navbar, the · doesn't get appropriate padding without this */
     padding-left: 15px;