Collider not floolowing my character

Hi there im making character sliding everytime I press right click. The problem is that my collider dont follow my character movement. What can I do ?

Here is my script of slide :

using UnityEngine; using System.Collections;

public class slide : MonoBehaviour { public float speed = 90.0f; public bool slideMove = false; public bool grounded = true;

 void Update ()
 {
     if(grounded && Input.GetMouseButtonDown(1))
     {
         slideInit();
     }
     
     if(!grounded && Input.GetMouseButtonUp(1))
     {
         slideExit();            
     }
 }
 void slideInit()
 {
     transform.Rotate( new Vector3 (-90.0f, 0, 0) );
     grounded = false;
 }
 
 void slideExit()
 {
     transform.Rotate( new Vector3 (90.0f, 0, 0) );
     grounded = true;
 }

}