Update custom.py

custom.py

@@ -127,13 +127,13 @@ js_code = """
             event.preventDefault();
         }
     });
-    textinput.addEventListener('focusin', function() {
+    textinput.addEventListener('focusin', function(event) {
         event.stopPropagation();   
-        baseweb.style.borderColor = 'rgb(255,196,35)';
+        textarea.style.borderColor = 'rgb(255,196,35)';
         });
-    textinput.addEventListener('focusout', function() {
+    textinput.addEventListener('focusout', function(event) {
         event.stopPropagation();   
-        baseweb.style.borderColor = 'white';
+        textarea.style.borderColor = 'white';
         }); 
     
     // Ctrl + Enter快捷方式