[Fix] - css issue in spinner coundown

Added clip-path to .spinner css class to make mask compatible with Firefox.

web/css/src/themes/default.css

@@ -2440,7 +2440,7 @@ body.mobile .l-icon-shortcuts {
   height: 20px;
   position: relative;
   margin: 4px 0px 2px 2px;
-
+  clip-path: ellipse(10px 10px at 50% 50%);
 }
 
 .spinner-inner {
@@ -4306,4 +4306,4 @@ meter[value="4"]::-webkit-meter-optimum-value { background: green; }
 meter[value="1"]::-moz-meter-bar { background: red; }
 meter[value="2"]::-moz-meter-bar { background: orange; }
 meter[value="3"]::-moz-meter-bar { background: yellow; }
-meter[value="4"]::-moz-meter-bar { background: green; }
+meter[value="4"]::-moz-meter-bar { background: green; }