diff --git a/src/App.js b/src/App.js
index 31972e7..11c2052 100644
--- a/src/App.js
+++ b/src/App.js
@@ -1,4 +1,4 @@
-import React, { useState, Suspense, useEffect } from "react";
+import React, { useState, Suspense } from "react";
 import { Button, Table, Empty, Tabs, Image } from "antd";
 
 import "highlight.js/styles/github.css";
diff --git a/src/solutionTemplate/index.jsx b/src/solutionTemplate/index.jsx
index 231cc36..0f5a8dd 100644
--- a/src/solutionTemplate/index.jsx
+++ b/src/solutionTemplate/index.jsx
@@ -123,7 +123,7 @@ ${desc}
 ${displayLanguage(language)} Code:
 
 \`\`\`${
-    language.toLocaleLowerCase() == "python3"
+    language.toLocaleLowerCase() === "python3"
       ? "python"
       : language.toLocaleLowerCase()
   }
diff --git a/src/submission/hideFailCases.js b/src/submission/hideFailCases.js
index c5a565b..27d307a 100644
--- a/src/submission/hideFailCases.js
+++ b/src/submission/hideFailCases.js
@@ -18,7 +18,7 @@ function hideFailCases() {
         expect.style.display = "none"
 
 
-        if (!document.querySelector('#leetcode-cheat-show-fail-cases')) {
+        if (!document.querySelector("#leetcode-cheat-show-fail-cases")) {
             const showFailCases = document.createElement("div");
             showFailCases.id = "leetcode-cheat-show-fail-cases";
             const showFailCasesTip = document.createElement("span")