--- a/browser/themes/linux/downloads/downloads.css
+++ b/browser/themes/linux/downloads/downloads.css
@@ -28,30 +28,16 @@
 
 #downloadsSummary,
 richlistitem[type="download"] {
   height: 6em;
   -moz-padding-end: 0;
   color: inherit;
 }
 
-#downloadsSummary {
-  padding: 8px 38px 8px 12px;
-  cursor: pointer;
-  -moz-user-focus: normal;
-}
-
-#downloadsSummary > .downloadTypeIcon {
-  list-style-image: url("chrome://browser/skin/downloads/download-summary.png");
-}
-
-#downloadsSummaryDescription {
-  color: -moz-nativehyperlinktext;
-}
-
 richlistitem[type="download"] {
   margin: 0;
   border-top: 1px solid hsla(0,0%,100%,.2);
   border-bottom: 1px solid hsla(0,0%,0%,.15);
   background: transparent;
   padding: 8px;
 }
 

--- a/browser/themes/osx/downloads/downloads.css
+++ b/browser/themes/osx/downloads/downloads.css
@@ -34,36 +34,16 @@
 
 #downloadsSummary,
 richlistitem[type="download"] {
   height: 7em;
   -moz-padding-end: 0;
   color: inherit;
 }
 
-#downloadsSummary {
-  padding: 8px 38px 8px 12px;
-  cursor: pointer;
-  -moz-user-focus: normal;
-}
-
-#downloadsSummary > .downloadTypeIcon {
-  list-style-image: url("chrome://browser/skin/downloads/download-summary.png");
-}
-
-@media (min-resolution: 2dppx) {
-  #downloadsSummary > .downloadTypeIcon {
-    list-style-image: url("chrome://browser/skin/downloads/download-summary@2x.png");
-  }
-}
-
-#downloadsSummaryDescription {
-  color: -moz-nativehyperlinktext;
-}
-
 richlistitem[type="download"] {
   margin: 0;
   border-top: 1px solid hsla(0,0%,100%,.07);
   border-bottom: 1px solid hsla(0,0%,0%,.2);
   background: transparent;
   padding: 8px;
 }
 

--- a/browser/themes/shared/downloads/downloads.inc.css
+++ b/browser/themes/shared/downloads/downloads.inc.css
@@ -26,16 +26,38 @@
   display: none;
 }
 
 #emptyDownloads {
   padding: 10px 20px;
   max-width: 40ch;
 }
 
+#downloadsSummary {
+  padding: 8px 38px 8px 12px;
+  cursor: pointer;
+  -moz-user-focus: normal;
+}
+
+#downloadsSummary > .downloadTypeIcon {
+  list-style-image: url("chrome://browser/skin/downloads/download-summary.png");
+}
+
+%ifdef XP_MACOSX
+@media (min-resolution: 2dppx) {
+  #downloadsSummary > .downloadTypeIcon {
+    list-style-image: url("chrome://browser/skin/downloads/download-summary@2x.png");
+  }
+}
+%endif
+
+#downloadsSummaryDescription {
+  color: -moz-nativehyperlinktext;
+}
+
 #downloadsHistory {
   background: transparent;
   cursor: pointer;
 }
 
 #downloadsHistory > .button-box {
   margin: 1em;
 }

--- a/browser/themes/windows/downloads/downloads.css
+++ b/browser/themes/windows/downloads/downloads.css
@@ -72,30 +72,16 @@
 
 #downloadsSummary,
 richlistitem[type="download"] {
   height: 7em;
   -moz-padding-end: 0;
   color: inherit;
 }
 
-#downloadsSummary {
-  padding: 8px 38px 8px 12px;
-  cursor: pointer;
-  -moz-user-focus: normal;
-}
-
-#downloadsSummary > .downloadTypeIcon {
-  list-style-image: url("chrome://browser/skin/downloads/download-summary.png");
-}
-
-#downloadsSummaryDescription {
-  color: -moz-nativehyperlinktext;
-}
-
 richlistitem[type="download"] {
   margin: 0;
   border-top: 1px solid hsla(0,0%,100%,.3);
   border-bottom: 1px solid hsla(220,18%,51%,.25);
   background: transparent;
   padding: 8px;
 }