Glad to see you here! It's impressive how far you've come today, and you are just one step away from seeing a simple yet impressive thing we can do with JavaScript. This will give you a glimpse of how JavaScript works with HTML and CSS to make your robot interesting! By using JavaScript, you will control and interact with your creation, adding dynamic abilities that make it come alive.
So far, you haven't learned much about JavaScript (but you will soon, don't worry!), now we want you to see an example of how powerful JavaScript can be in modifying the robot.
In these instructions, you will execute the steps to change your robot's eyes from open to closed using JavaScript! Does it seem simple? Yes, but you will later make your robot more dynamic by pushing a button to open and close that eye! Of course, that's for when you will learn more about JavaScript.
This is more of a puzzle to use your brain to follow hints and make things work, even if it seems complex (it is not!). Isn't that your brain's superpower?
Then in your Javascript file, you're going to close the left eye of your entity. To do so, you have to first target the `eye-left` HTML element by its `id` using the [getElementById](https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementById) method.
Then, after your eye is targetted, [set the style](https://developer.mozilla.org/en-US/docs/Web/API/ElementCSSInlineStyle/style#setting_styles) of your `eye-left` to change its background color to "black". Finally, we also need to modify its shape; for that, we are going to add a new class to it. To do so, you need to you use the [classList.add()](https://developer.mozilla.org/en-US/docs/Web/API/Element/classList).
> By the way, do you like your new background color chosen earlier? Me too.
> To personalize your robot even more, don't hesitate to change the inclination of its arms in a direction that reflects the personality you have chosen!