Fix pulsing on dark backgrounds

themes/ally/layouts/partials/head.html

@@ -21,6 +21,17 @@
     blockquote {
         color: {{.Params.quote}};
     }
+    {{ if (isset .Params "pulse_light")}}
+    @keyframes flash {
+        from {
+            background-color: rgba(255, 255, 255, 0);
+        }
+
+        to {
+            background-color: rgba(255, 255, 255, 0.2);
+        }
+    }
+    {{ end }}
     </style>
     {{end}}
 </head>

themes/ally/static/css/main.css

@@ -157,11 +157,13 @@ code {
         background-color: rgba(128, 128, 128, 0.2);
     }
 }
-.pulse {
+.pulse, .pulse span {
     animation-name: flash;
     animation-duration: 1s;
     animation-iteration-count: infinite;
     animation-direction: alternate;
+}
+.pulse {
     padding: 0 3px;
 }