diff --git a/README.md b/README.md
index 87f5ec86ce661d8ab6d71a34794cde89098fc3df..a009cf36c894e9d1f8ac79dce71fe73fe2b7209c 100644
--- a/README.md
+++ b/README.md
@@ -5,16 +5,16 @@
 
 ## this is the content that teaching how to transform camera using mouse dragging.
 
-Before we start this tutorial, students should prepare the basic code of self rotating 3d cube.
-The example of the first code will be shown the first part.
-
-The whole tutorial will be followed by some codes that changed by each steps.
-**Every steps has the codes of it, output result, and some gif files that help students to understand it well.**
+Before we start this tutorial, students should prepare the basic code of self rotating 3d cube.\
+The example of the first code will be shown the first part.\
+\
+The whole tutorial will be followed by some codes that changed by each steps.\
+**Every steps has the codes of it, output result, and some gif files that help students to understand it well.**\
 There are 3 steps in this tutorial.
 
 ## Step 0. Before we start! You have to prepare...
 
-In this part, I'll show a example code of self-rotating 3d cube and a example output of it.
+In this part, I'll show a example code of self-rotating 3d cube and a example output of it.\
 This code is used for the next steps.
 
 ## Step 1. Remove some codes.
@@ -23,19 +23,19 @@ In this part, we remove some codes related to self rotation.
 
 ## Step 2. Use new variable.
 
-In this part, we make new variables so that we can prepare for mouse dragging.
+In this part, we make new variables so that we can prepare for mouse dragging.\
 With some gif files and code, students can understand it easily.
 
 ## Step 3. Add some codes so that the mouse can drag the cube!
 
-In this part, we make the codes for the mouse dragging.
-This is related to the `addEventListener` of HTML DOM event and JS.
-We make 3 functions with describtion of them.
+In this part, we make the codes for the mouse dragging.\
+This is related to the `addEventListener` of HTML DOM event and JS.\
+We make 3 functions with describtion of them.\
 Also, in this part, there are some parts that could be hard to understand, so I add a gif so that the students can understand it well.
 
 ## Step 4. It's done!!! Try it!!!
 
-At the end, the students can make his/her own mouse dragging tranformation of camera.
+At the end, the students can make his/her own mouse dragging tranformation of camera.\
 Also, the students can try mouse dragging to transform camera.
 
 # References