When jump my character controller model it goes out of collider

when I am jumping my character controller model then it jump but it goes out of character controller collider and when it comes in running state then it is perfectly with character controller collider. So please help me anyone for this problem. I am using following code :-

void Update() {

if(isMove == false && Menu.isPlay == true) { controller.Move(new Vector3(-Input.acceleration.y 50.0f Time.deltaTime,0,0)); controller.Move(Vector3.forward 30.0f Time.deltaTime);

         animation.Play("run");
         if(controller.isGrounded)
         {
             PlayAnimation("run");
         }
         else
         {
             CheckForIdle();
         }
         
     }

if(Input.GetKey(KeyCode.Space) && !jumping) { //Debug.Log("Jumping 222"); jumping = true; isMove = true; isSlide = false; PlayAnimation("jump"); gravity = jumpforce;

     }

if(Input.GetKey(KeyCode.DownArrow) && !jumping) { isSlide = true; isMove = true; jumping = false;

         PlayAnimation("slide");
     }
     
     
     
     if(jumping == true )
     {
         controller.Move(Vector3.forward * 30.0f * Time.deltaTime);
         controller.Move(Vector3.up * 2.0f * gravity * Time.deltaTime);
         gravity -= gravityfall  * Time.deltaTime;
         
         if(controller.isGrounded )
         {
             jumping = false;
             isMove = false;
             isSlide = false;
             
         }
         
     }
     
     
     if(!controller.isGrounded && !jumping)
     {
         controller.Move(Vector3.up * gravity * Time.deltaTime);
         gravity -= gravityfall  * Time.deltaTime;
     }
     
 }
 
 void  PlayAnimation ( string AnimName  )
 {
     if (!animation.IsPlaying(AnimName))
     {
         animation.CrossFadeQueued(AnimName, 0.5f, QueueMode.PlayNow);
     }
 }
 
 void  CheckForIdle ()
 {
     if (animation.IsPlaying("run"))
         PlayAnimation("idle1");
     if (!animation.isPlaying)
         animation.Play("idle1");
 }