diff --git a/homepage/static/assets/js/captcha_refresh.js b/homepage/static/assets/js/captcha_refresh.js
index 6f686af..54b0822 100644
--- a/homepage/static/assets/js/captcha_refresh.js
+++ b/homepage/static/assets/js/captcha_refresh.js
@@ -6,15 +6,15 @@ let g_captcha_timeout_remain = g_captcha_timeout_seconds;
 let g_current_captcha_id = captcha_hidden_field.value;
 
 function getColorScheme() {
-    return window.matchMedia("(prefers-color-scheme: light)").matches ? "light" : "dark";
+	return window.matchMedia("(prefers-color-scheme: light)").matches ? "light" : "dark";
 }
 
 async function getNewCaptcha() {
-    const id = await fetch("/captcha/").then(r => r.text());
-    g_current_captcha_id = id;
-    captcha_hidden_field.value = id;
-    setTimeout(() => { captcha_img.src = `/captcha/${id}/image?style=${getColorScheme()}` }, 600);
-    g_captcha_timeout_remain = g_captcha_timeout_seconds;
+	const id = await fetch("/captcha/").then(r => r.text());
+	g_current_captcha_id = id;
+	captcha_hidden_field.value = id;
+	setTimeout(() => { captcha_img.src = `/captcha/${id}/image?style=${getColorScheme()}` }, 600);
+	g_captcha_timeout_remain = g_captcha_timeout_seconds;
 }
 
 const captcha_span = document.getElementsByClassName("captcha")[0];
@@ -22,27 +22,27 @@ const captcha_img = captcha_span.children[1];
 
 captcha_span.classList.toggle("refresh");
 captcha_span.children[3].innerHTML =
-    `<button id="refresh">Refresh</button>ed in <b><span id="remain">600</span></b> seconds.`;
+	`<button id="refresh">Refresh</button>ed in <b><span id="remain">600</span></b> seconds.`;
 
 const captcha_refresh = document.getElementById("refresh");
 const captcha_remain = document.getElementById("remain");
 
 captcha_refresh.classList.toggle("refresh");
 captcha_refresh.addEventListener("click", async e => {
-    e.preventDefault();
-    captcha_refresh.disabled = true;
-    setTimeout(async () => {
-        captcha_refresh.disabled = false;
-        await fetch(`/captcha/${g_current_captcha_id}?remove`); }, 3000);
-    document.getElementsByName("captcha_answer")[0].value = "";
-    await getNewCaptcha();
+	e.preventDefault();
+	captcha_refresh.disabled = true;
+	setTimeout(async () => {
+		captcha_refresh.disabled = false;
+		await fetch(`/captcha/${g_current_captcha_id}?remove`); }, 3000);
+	document.getElementsByName("captcha_answer")[0].value = "";
+	await getNewCaptcha();
 });
 
 // Remove unused CAPTCHA on a server.
 window.addEventListener("unload", () => fetch(`/captcha/${g_current_captcha_id}?remove`));
 
 setInterval(async () => {
-    captcha_remain.innerText = --g_captcha_timeout_remain;
-    if (g_captcha_timeout_remain == 0)
-        await getNewCaptcha();
+	captcha_remain.innerText = --g_captcha_timeout_remain;
+	if (g_captcha_timeout_remain == 0)
+		await getNewCaptcha();
 }, 1000);
\ No newline at end of file
diff --git a/homepage/static/assets/js/mindflow.js b/homepage/static/assets/js/mindflow.js
index 7770fb5..37bbae9 100644
--- a/homepage/static/assets/js/mindflow.js
+++ b/homepage/static/assets/js/mindflow.js
@@ -4,10 +4,10 @@ const articles = document.getElementsByTagName("article");
 document.getElementById("filter").classList.remove("hidden");
 
 for (let i = 0; i < buttons.length; ++i)
-    if (buttons[i].name !== "")
-        buttons[i].addEventListener("click", e => {
-            for (let j = 0; j < articles.length; ++j)
-                if (articles[j].id.startsWith(e.target.name) || e.target.name === "all")
-                    articles[j].classList.remove("hidden");
-                else
-                    articles[j].classList.add("hidden"); });
\ No newline at end of file
+	if (buttons[i].name !== "")
+		buttons[i].addEventListener("click", e => {
+			for (let j = 0; j < articles.length; ++j)
+				if (articles[j].id.startsWith(e.target.name) || e.target.name === "all")
+					articles[j].classList.remove("hidden");
+				else
+					articles[j].classList.add("hidden"); });
\ No newline at end of file