Improve messages

content.js

@@ -5,7 +5,7 @@
 let Content = {
 
   click_for_points: {
-    instructions: "This is an example of how automatically graded assignments appear on this course. Notice that it is always crucial to <strong>carefully read assignment instruction</strong> before starting to solve it. At this time there is no problem to solve. You are just expected to click the button on left to receive your points on this assigment.",
+    instructions: "This is an example of how automatically graded assignments appear on this course. Always <strong>carefully read assignment instruction</strong> before starting to do anything. At this time there is no problem to solve. You are just expected to click the button on left to receive your first points.",
     html: "<button class=\"green\">Click Me!</button>",
     selector: ".exercise button",
     events: "click",
@@ -56,7 +56,7 @@ let Content = {
   },
 
   change_color: {
-    instructions: "The blue area on left contains barely visible text. Your task is to use the browser inspector tool to locate the paragraph element <strong>&lt;p&gt;</strong> containing the barely visible text and then add a CSS property to apply another <strong>color</strong>. <em>Note that disabling current CSS rules does not grade the exercise.</em>",
+    instructions: "The blue area on left contains barely visible text. Your task is to use the browser inspector tool to locate the paragraph element <strong>&lt;p&gt;</strong> containing the barely visible text and then add a CSS property to apply another <strong>color</strong>. <em>Note that editing existing CSS rules does not grade the exercise.</em>",
     html: "<div class=\"acos-webdev-poi\"><p class=\"blue\">The quick brown fox jumps over the lazy dog's back.</p></div>",
     mutations: true,
     points: function ($element, config, mutations) {