diff --git a/assets/js/main.js b/assets/js/main.js
index b81a8d1..d9ffd5a 100644
--- a/assets/js/main.js
+++ b/assets/js/main.js
@@ -1,85 +1,68 @@
-document.addEventListener('DOMContentLoaded', function () {
+// there is no need to check for dom content loaded if you use defer inside html. Defer makes sure the script pauses until the dom loaded
 
-    // rather than looking for it all the time, you could just create an enum and change this once than updating every line
-    const github = {
-        repo: 'https://github.com/lapce/lapce',
-        windows: 'Lapce-windows.msi',
-        linux: 'Lapce-linux.tar.gz',
-        macos: 'Lapce-macos.dmg'
-    }
+document.addEventListener("DOMContentLoaded", function () {
+  // rather than looking for it all the time, you could just create an enum and change this once than updating every line
 
-    // there is no need to check for dom content loaded if you use defer inside html. Defer makes sure the script pauses until the dom loaded
+  const github = {
+    repo: "https://github.com/lapce/lapce",
+    windows: "Lapce-windows.msi",
+    linux: "Lapce-linux.tar.gz",
+    macos: "Lapce-macos.dmg",
+  };
 
-    // open
-    const burger = document.querySelectorAll('.navbar-burger');
-    const menu = document.querySelectorAll('.navbar-menu');
+  const burger = document.querySelectorAll(".navbar-burger");
+  const menu = document.querySelectorAll(".navbar-menu");
+  const close = document.querySelectorAll(".navbar-close");
+  const backdrop = document.querySelectorAll(".navbar-backdrop");
+  const download = document.querySelector("#download");
 
-    if (burger.length && menu.length) {
-        for (let i = 0; i < burger.length; i++) {
-            burger[i].addEventListener('click', () => {
-                for (let j = 0; j < menu.length; j++) {
-                    menu[j].classList.toggle('hidden');
-                }
-            });
-        }
-    }
+  if (burger.length && menu.length) {
+    burger.forEach((burgerElement) => {
+      burgerElement.addEventListener("click", () => {
+        menu.forEach((menuElement) => {
+          menuElement.classList.toggle("hidden");
+        });
+      });
+    });
+  }
 
-    // close
-    const close = document.querySelectorAll('.navbar-close');
-    const backdrop = document.querySelectorAll('.navbar-backdrop');
+  const closeMenu = () => {
+    menu.forEach((menuElement) => {
+      menuElement.classList.toggle("hidden");
+    });
+  };
 
-    if (close.length) {
-        for (let i = 0; i < close.length; i++) {
-            close[i].addEventListener('click', () => {
-                for (let j = 0; j < menu.length; j++) {
-                    menu[j].classList.toggle('hidden');
-                }
-            });
-        }
-    }
+  if (close.length) {
+    close.forEach((closeElement) => {
+      closeElement.addEventListener("click", closeMenu);
+    });
+  }
 
-    if (backdrop.length) {
-        for (let i = 0; i < backdrop.length; i++) {
-            backdrop[i].addEventListener('click', () => {
-                for (let j = 0; j < menu.length; j++) {
-                    menu[j].classList.toggle('hidden');
-                }
-            });
-        }
-    }
+  if (backdrop.length) {
+    backdrop.forEach((backdropElement) => {
+      backdropElement.addEventListener("click", closeMenu);
+    });
+  }
 
-    // to avoid variables being reached outside of scope, ES6 guides recommend the use of let and const for variables. "var" is only available for backwards compatibility
-    let OSName = "mac";
-    const navApp = navigator.userAgent.toLowerCase();
+  const navApp = navigator.userAgent.toLowerCase();
 
-    switch (true) {
-        case (navApp.indexOf("win") != -1):
-            OSName = "win";
-            break;
-        case (navApp.indexOf("mac") != -1):
-            OSName = "mac";
-            break;
-        case (navApp.indexOf("linux") != -1):
-            OSName = "linux";
-            break;
-        case (navApp.indexOf("x11") != -1):
-            OSName = "linux";
-            break;
-    }
+  const setDownload = (innerText, release) => {
+    download.innerText = innerText;
+    download.setAttribute(
+      "href",
+      `${github.repo}/releases/latest/download/${release}`
+    );
+  };
 
-    const download = document.querySelector("#download");
-    switch (OSName) {
-        case "win":
-            download.innerText = "Download for Windows";
-            download.setAttribute("href", `${github.repo}/releases/latest/download/${github.windows}`)
-            break;
-        case "mac":
-            download.innerText = "Download for macOS";
-            download.setAttribute("href", `${github.repo}/releases/latest/download/${github.macos}`)
-            break;
-        case "linux":
-            download.innerText = "Download for Linux";
-            download.setAttribute("href", `${github.repo}/releases/latest/download/${github.linux}`)
-            break;
-    }
+  switch (true) {
+    case navApp.indexOf("win") !== -1:
+      setDownload("Download for Windows", github.windows);
+      break;
+    case navApp.indexOf("mac") !== -1:
+      setDownload("Download for macOS", github.macos);
+      break;
+    case navApp.indexOf("linux") !== -1 || navApp.indexOf("x11") !== -1:
+      setDownload("Download for Linux", github.linux);
+      break;
+  }
 });