input box style in bootstrap code example

Example: bootstrap input field validation

  

    

      First name
      
      

        Looks good!
      
    
    

      Last name
      
      

        Looks good!
      
    
    

      Username
      

        

          @
        
        
        

          Please choose a username.
        
      
    
  
  

    

      City
      
      

        Please provide a valid city.
      
    
    

      State
      
      

        Please provide a valid state.
      
    
    

      Zip
      
      

        Please provide a valid zip.
      
    
  
  

    

      
      
        Agree to terms and conditions
      
      

        You must agree before submitting.
      
    
  
  Submit form