boostrap grid nested columns code example

Example: nested columsn inside bootstrap

  

      

        

            

              
First Part
            
        
        

            

              
Second Part
            
        
      
        

            

              

                

                  

                    

                    
Nested 1
                  
                  
                  

                    

                    
Nested 2
                  
                  
                
                

                  

                    

                    
Nested 3
                  
                  
                  

                    

                    
Nested 4
                  
                  
                
            

            
            

              

                
Fourth Part[enter image description here][1]