added layout for lobby scene

Assets/Scripts/Lobby/LobbyBtn.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.EventSystems;
+
+public class LobbyBtn : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler, IPointerClickHandler
+{
+    [SerializeField] GameObject marker;
+
+    //Marker Lerp
+    [SerializeField] float markerWidth = 40.0f;
+    [SerializeField] float hoverMarkerTransitionTime = 0.1f;
+    [SerializeField] float exitMarkerTransitionTime = 0.1f;
+
+    float hoveringTimePassed = 0.0f;
+    float exitingTimePassed = 0.0f;
+
+
+    bool isHovering = false;
+
+    void Update()
+    {
+        if (isHovering)
+        {
+            exitingTimePassed = 0.0f;
+            hoveringTimePassed += Time.deltaTime;
+
+            //Marker
+            RectTransform rectTranform = marker.GetComponent<RectTransform>();
+            rectTranform.sizeDelta = new Vector2(Mathf.Lerp(0, markerWidth, hoveringTimePassed / hoverMarkerTransitionTime), rectTranform.rect.height);
+        }
+        else
+        {
+            hoveringTimePassed = 0.0f;
+            exitingTimePassed += Time.deltaTime;
+
+            //Marker
+            RectTransform rectTranform = marker.GetComponent<RectTransform>();
+            rectTranform.sizeDelta = new Vector2(Mathf.Lerp(markerWidth, 0, exitingTimePassed / exitMarkerTransitionTime), rectTranform.rect.height);
+
+        }
+    }
+
+    public void OnPointerEnter(PointerEventData eventData)
+    {
+        isHovering = true;
+    }
+
+    public void OnPointerExit(PointerEventData eventData)
+    {
+        isHovering = false;
+    }
+
+    public void OnPointerClick(PointerEventData eventData)
+    {
+        isHovering = false;
+    }
+}

Assets/Scripts/Lobby/LobbyBtn.cs.meta

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