diff --git a/README.md b/README.md
index b004951..18ad769 100644
--- a/README.md
+++ b/README.md
@@ -1,20 +1,20 @@
 My Hobby x86-64 OS kernel.
 
 # Building
-## Environment
+### Environment
 Any Linux distribution / Bash for Windows + GCC cross compiler.
 
-## Required packages
+### Required packages
 To compile the kernel, the following modules are required on linux system, please install these:
 
 nasm, xorriso, grub-common, grub-pc-bin
 
-## Cross-compiler
-### Method 1 - Compile one yourself.
+### Cross-compiler
+##### Method 1 - Compile one yourself.
 Just follow the instructions here: https://wiki.osdev.org/GCC_Cross-Compiler
 Remember to set the "TARGET" to x86_64-elf instead of i686-elf and build libgcc without redzone https://wiki.osdev.org/Libgcc_without_red_zone.
 
-### Method 2 - Precompiled binaries
+##### Method 2 - Precompiled binaries
 Here is my precompiled cross compiler. Feel free to use it.
 VERSION: GCC 7.3 + Binutils 2.30
 HOST: x86_64-pc-linux-gnu
@@ -24,7 +24,7 @@ CONFIGURED WITH: --target=x86_64-elf --disable-nls --enable-languages=c,c++ --wi
 
 2. Run "tar -xvf cross.tar.gz -C $HOME/opt/cross"
 
-## Compiling
+### Compiling
 Run "make all" in the root directory
 The makefile generates secxkrnl.iso (kernel image), secxkrnl.elf(kernel executable), secxkrnl.dmp(kernel disassembly) at the end.