fix device intro sizing

diff --git a/css/style.css b/css/style.css
index ee135fb..09a636c 100644
--- a/css/style.css
+++ b/css/style.css
@@ -1847,8 +1847,8 @@
 .animation {
   display: inline-block;
   position: relative;
-  width: 100%;
-  height: 60%;
+  width: 378px; 
+  height: 290px; 
   margin: 0 auto;
   vertical-align: middle;
 }