Resolve "Get Next button Unreadable in safari"

Add some CSS to make the get-next button look the same in safari as in other browsers.

Closes #558 (closed)

src/main/resources/scss/global.scss

@@ -1147,3 +1147,12 @@ dialog {
   }
 }
 
+/**
+ * Fix the button appearance in Safari
+ */
+button,
+[type="button"],
+[type="reset"],
+[type="submit"] {
+  -webkit-appearance: none;
+}