add introduction

app.py

@@ -153,6 +153,16 @@ with gr.Blocks() as demo:
     This interface allows you to run Chai1 simulations on a given Fasta sequence file.     
     """) 
     
+    with gr.Tab("Introduction 🔭"):
+        
+        gr.Markdown(
+        """
+        ## Chai1 Simulation Interface
+        This interface allows you to run Chai1 simulations on a given Fasta sequence file.
+        The Chai1 model is designed to predict the 3D structure of proteins based on their amino acid sequences.
+        You can input a Fasta file containing the sequence of the molecule you want to simulate, and the output will be a 3D representation of the molecule based on the Chai1 model.
+        """)
+    
     with gr.Tab("Configuration 📦"):
         text_input = gr.Textbox(placeholder="Fasta format sequences", label="Fasta content", lines=10)
         text_output = gr.Textbox(placeholder="Fasta file name", label="Fasta file name")