diff --git a/install-usercss.html b/install-usercss.html
index 89b6f123..6ef185e8 100644
--- a/install-usercss.html
+++ b/install-usercss.html
@@ -58,7 +58,9 @@
       </h1>
       <div class="actions">
         <h2 class="installed" i18n-text="installButtonInstalled"></h2>
-        <button class="install" i18n-text="installButton"></button>
+        <span class="install-wrapper">
+          <button class="install" i18n-text="installButton"></button>
+        </span>
         <label class="set-update-url">
           <input type="checkbox">
           <span></span>
diff --git a/install-usercss/install-usercss.css b/install-usercss/install-usercss.css
index bf9f29eb..e4711b31 100644
--- a/install-usercss/install-usercss.css
+++ b/install-usercss/install-usercss.css
@@ -155,9 +155,8 @@ h1 small {
   background-position: center center;
 }
 
-.install:hover {
-  outline: 1px solid lightgray;
-  outline-offset: 1px;
+.install-wrapper:hover {
+  filter: brightness(1.1);
 }
 
 .install.reinstall:after {