2 files changed, 28 insertions, 2 deletions
diff --git a/devtools/client/themes/common.css b/devtools/client/themes/common.css
index 3d713ada7..133770150 100644
--- a/devtools/client/themes/common.css
+++ b/devtools/client/themes/common.css
@@ -2,7 +2,9 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+
 @import url("resource://devtools/client/themes/splitters.css");
+@namespace html url("http://www.w3.org/1999/xhtml");
 
 :root {
   font: message-box;
@@ -33,6 +35,10 @@
   font-size: 80%;
 }
 
+/* Override wrong system font from forms.css */
+html|button, html|select {
+  font: message-box;
+}
 
 /* Autocomplete Popup */
 
diff --git a/devtools/client/themes/netmonitor.css b/devtools/client/themes/netmonitor.css
index fea634a0e..eae6272be 100644
--- a/devtools/client/themes/netmonitor.css
+++ b/devtools/client/themes/netmonitor.css
@@ -8,6 +8,7 @@
 }
 
 #react-clear-button-hook,
+#react-summary-button-hook,
 #react-details-pane-toggle-hook {
   display: flex;
 }
@@ -47,7 +48,7 @@
   #details-pane-toggle,
   #details-pane.pane-collapsed,
   .requests-menu-waterfall,
-  #requests-menu-network-summary-button > .toolbarbutton-text {
+  #requests-menu-network-summary-button > .summary-info-text {
     display: none;
   }
 }
@@ -744,16 +745,35 @@
 /* Performance analysis buttons */
 
 #requests-menu-network-summary-button {
+  display: flex;
+  align-items: center;
   background: none;
   box-shadow: none;
   border-color: transparent;
-  list-style-image: url(images/profiler-stopwatch.svg);
   padding-inline-end: 0;
   cursor: pointer;
   margin-inline-end: 1em;
   min-width: 0;
 }
 
+#requests-menu-network-summary-button > .summary-info-icon {
+  background-image: url(images/profiler-stopwatch.svg);
+  filter: var(--icon-filter);
+  width: 16px;
+  height: 16px;
+  opacity: 0.8;
+}
+
+#requests-menu-network-summary-button > .summary-info-text {
+  opacity: 0.8;
+  margin-inline-start: 0.5em;
+}
+
+#requests-menu-network-summary-button:hover > .summary-info-icon,
+#requests-menu-network-summary-button:hover > .summary-info-text {
+  opacity: 1;
+}
+
 /* Performance analysis view */
 
 #network-statistics-toolbar {