I don't want the blues coming out when the camera follows the player.,how do I destroy the blue background in my camera tracking

[unity_4nxsOi3-5VVdug]

Hi ı’m new unity user.
I don’t want to see the blue in the back when the camera follows the player.
While my game is playing the camera goes right down. and Cameram follows my player. But I don’t want the background blues to appear. I would appreciate it if you could help.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class kamer : MonoBehaviour {

public Transform player;
public Vector3 offset;

void Update () 
{
	transform.position = new Vector3 (player.position.x + offset.x, player.position.y + offset.y, offset.z); // Camera follows the player with specified offset position
}

}
,Hi , im new to unity and using unity. the player has the following camera.
I don’t want the background blue to appear when playing games and watching the camera player. I would appreciate it if you could help.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class kamer : MonoBehaviour {

public Transform player;
public Vector3 offset;

void Update () 
{
	transform.position = new Vector3 (player.position.x + offset.x, player.position.y + offset.y, offset.z); // Camera follows the player with specified offset position
}

}

[Hellium]

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class kamer : MonoBehaviour
{    
     public Transform player;
     public Vector3 offset;
      // Specify the min and max position of the camera:
      // x = min value on x axis
      // y = min value on y axis
      // z = max value on x axis
      // w = max value on y axis
     public Vector4 bounds;
     void Update () 
     {
         // Camera follows the player with specified offset position
         transform.position = new Vector3 (
             Mathf.Clamp( player.position.x + offset.x, bounds.x, bounds.z ),
             Mathf.Clamp( player.position.y + offset.y, bounds.y, bounds.w ),
             offset.z
         );
     }    
}