diff --git a/change.js b/change.js
index f17798a..65e11b4 100644
--- a/change.js
+++ b/change.js
@@ -5,20 +5,14 @@
     let cssbtn2 = document.getElementById("css2");
     let cssbtn3 = document.getElementById("css3");
     
-    //function bg1(){
     cssbtn1.addEventListener("click", (e) => {  
-	if (newcss) return;
-	newcss = document.createElement("link");
-	newcss.rel = "stylesheet";
-	newcss.href = "new1.css";
-	head.appendChild(newcss);	// link要素を追加
-    });
-    /*if(bg2 && bg3){
-            newcss.remove();
-            newcss = null;
-    }*/
-//}
-    //function bg2(){
+        if (newcss) return;
+        newcss = document.createElement("link");
+        newcss.rel = "stylesheet";
+        newcss.href = "new1.css";
+        head.appendChild(newcss);	// link要素を追加
+        });
+
     cssbtn2.addEventListener("click", (e) => {  
         if (newcss) return;
         newcss = document.createElement("link");
@@ -26,12 +20,7 @@
         newcss.href = "new2.css";
         head.appendChild(newcss);	// link要素を追加
         });
-        /*if(bg1 && bg3){
-                newcss.remove();
-                newcss = null;
-        }*/
-    //}
-    //function bg3(){
+
     cssbtn3.addEventListener("click", (e) => {  
             if (newcss) return;
             newcss = document.createElement("link");
@@ -40,11 +29,7 @@
             newcss.href = "new3.css";
             head.appendChild(newcss);	// link要素を追加
             });
-            /*if(bg2 && bg1){
-                    newcss.remove();
-                    newcss = null;
-            }*/
-        //}
+
         let unlbtn = document.getElementById("unl");
         unlbtn.addEventListener("click", (e) => {
             if (newcss) {