diff --git a/README.md b/README.md
index 90d4d69..8f8bda3 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ Feel free to explore, contribute, and share your insights!
 ## Table of Contents
 
 
-## I- [Predecessors of Quantum Mechanics](#predecessors-of-quantum-mechanics) – Key Mathematicians and Their Contributions
+#### I- [Predecessors of Quantum Mechanics](#predecessors-of-quantum-mechanics) – Key Mathematicians and Their Contributions
 1. **Leonhard Euler (1748)**  
 2. **Carl Friedrich Gauss (1809)**  
 3. **Joseph Fourier (1822)**  
@@ -65,7 +65,7 @@ Feel free to explore, contribute, and share your insights!
 
 <br><br>
 
-## I- [Predecessors of Quantum Mechanics](#predecessors-of-quantum-mechanics) – Key Mathematicians and Their Contributions
+### I- [Predecessors of Quantum Mechanics](#predecessors-of-quantum-mechanics) – Key Mathematicians and Their Contributions
 
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