.htaccess                          |  4 ++++
 core/themes/seven/install-page.css | 21 +++++++++++++--------
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/.htaccess b/.htaccess
index 45abcc7..8c45fba 100644
--- a/.htaccess
+++ b/.htaccess
@@ -19,6 +19,10 @@ ErrorDocument 404 /index.php
 # Set the default handler.
 DirectoryIndex index.php index.html index.htm
 
+# Add correct encoding for SVGZ.
+AddType image/svg+xml svg svgz
+AddEncoding gzip svgz
+
 # Override PHP settings that cannot be changed at runtime. See
 # sites/default/default.settings.php and drupal_environment_initialize() in
 # core/includes/bootstrap.inc for settings that can be changed at runtime.
diff --git a/core/themes/seven/install-page.css b/core/themes/seven/install-page.css
index f76e3b1..1d5c269 100644
--- a/core/themes/seven/install-page.css
+++ b/core/themes/seven/install-page.css
@@ -8,21 +8,25 @@
 .install-background {
   background-color: #1275b2;
   background-image:
-    url('images/noise-low.png'),
+    url('images/druplicon-watermark.svgz'),
     -webkit-radial-gradient(hsl(203, 80%, 45%), hsl(203, 80%, 32%));
   background-image:
-    url('images/noise-low.png'),
-    -moz-radial-gradient(hsl(203, 80%, 45%), hsl(203, 80%, 32%));
-  background-image:
-    url('images/noise-low.png'),
+    url('images/druplicon-watermark.svgz'),
     -o-radial-gradient(hsl(203, 80%, 45%), hsl(203, 80%, 32%));
   background-image:
-    url('images/noise-low.png'),
+    url('images/druplicon-watermark.svgz'),
     radial-gradient(hsl(203, 80%, 45%), hsl(203, 80%, 32%));
-  background-repeat: repeat;
-  background-position: left top, 50% 50%;
+  background-repeat: no-repeat;
+  background-position: 50% 50%, 50% 50%;
+  background-size: 2600px 2600px;
+  background-attachment: fixed;
   min-height: 100%;
 }
+@media (min-width: 1800px) {
+  .install-background {
+    background-size: 4600px 4600px;
+  }
+}
 body.install-page {
   background: none;
 }
@@ -102,6 +106,7 @@ body.install-page #page-title {
     padding: 0;
   }
   body.install-page #page {
+    border-radius: 5px;
     width: auto;
     padding: 10px 20px 0;
   }