Update working-with-classes-and-objects.mdx

Author: dha-stix

docs/technologies/javascript/working-with-classes-and-objects.mdx

@@ -12,19 +12,23 @@ As you begin your journey into the world of JavaScript and programming, you'll r
 ![JavaScript Ninja](https://media.giphy.com/media/v1.Y2lkPTc5MGI3NjExNGUxN2MwYmYzYTRmNWY0YmNhNzFkOWIzYTY5YWM1ZDg4ZDY0ZDY2NyZlcD12MV9pbnRlcm5hbF9naWZzX2dpZklkJmN0PWc/jzHFPlw89eTqU/giphy.gif)
 
 ## What is a variable?  
-A variable is simply an identifier or container that holds a value. It can contain data of different types, such as boolean, string, number, object, and array.
+A variable is simply an identifier or container that holds a value. It can contain data of different types, such as boolean, string, number, object, and array.  
+
 > 💡 A boolean variable holds either True or False, a string variable contains a sequence of characters enclosed in quotation marks, and an array is a collection of values of any data type.
 
 ![how variable works](https://user-images.githubusercontent.com/67129211/235643175-92e8441b-1360-4f55-9264-a225ab1165b9.png)
 
 From the image above, the cup represents an empty variable; the milk and coffee are data of different data types. When you put the data into the cup, the cup becomes a variable of data type, coffee or milk. 
 
 ## How to create variables in JavaScript
-To declare (create) variables in JavaScript, you need to use some built-in keywords such as var, let, and const. Let's talk briefly about them.
+To declare (create) variables in JavaScript, you need to use some built-in keywords such as var, let, and const. Let's talk briefly about them. 
+
 ### The var keyword
-The var keyword is the oldest way of declaring variables in JavaScript, and it's not advisable to use it in your JavaScript programs because it is not block scope. 
+The var keyword is the oldest way of declaring variables in JavaScript, and it's not advisable to use it in your JavaScript programs because it is not block scope.  
+
 > A variable is block-scoped when it only exists within the curly braces where it was declared and cannot be accessed outside the curly braces. 
-Let’s take a look at some examples.
+Let’s take a look at some examples. 
+
 ```js
 var ageInWords = "Eighteen"; //ageInWords holds the string value 
 var male = true; //male holds a boolean value
@@ -44,15 +48,17 @@ let age = 20; //sets a variable to 20
 age = 5; // re-assign age to 5
 console.log(age); // prints 5 to the console
 ```
-The code snippet above shows a variable created using the `let` keyword with an initial value of 20, then changed to 5.
+The code snippet above shows a variable created using the `let` keyword with an initial value of 20, then changed to 5. 
+
 ### The const keyword
 The const keyword is used to declare variables that cannot be re-assigned to another value. It holds constant values.
 ```js
 const age = 20;
 age = 10;
 console.log(age)  //returns a TypeError: Assignment to constant variable. (Invalid)
 ```
-> 💡 Don’t use the `var` keyword. Use `const` when you need to declare a constant and `let` when the variable can be re-assigned to another value.
+> 💡 Don’t use the `var` keyword. Use `const` when you need to declare a constant and `let` when the variable can be re-assigned to another value.  
+
 ### Naming variables in JavaScript
 When naming variables in JavaScript, there are a few things you need to consider.
 - Variables can only start with a letter, underscore, or dollar sign. Numbers and other symbols can come after the first position.