diff --git a/Cargo.toml b/Cargo.toml
index 6ebaa1a..b624a3c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,3 +43,6 @@ yaml-rust = "0.4" #only in debug mode
 html-minifier = "3.0"
 yaml-rust = "0.4"
 linked-hash-map = "0.5"
+
+[profile.dev.package.scrypt]
+opt-level = 3
diff --git a/src/frontend/index.css b/src/frontend/index.css
index 317fb0a..4631f39 100644
--- a/src/frontend/index.css
+++ b/src/frontend/index.css
@@ -255,7 +255,8 @@ button:hover::after {
 #left_panel ul li.is_verified p::after {
     content: url("/static/imgs/icons/verified/ACCENT_COLOR");
 }
-#left_panel ul li .not_seen_marker {
+#left_panel ul li.not_seen::after {
+    content: "";
     width: 12px;
     height: 12px;
     background-color: var(--accent);
@@ -407,7 +408,7 @@ button:hover::after {
     margin-bottom: 0;
 }
 #msg_log {
-    overflow-y: scroll;
+    overflow-y: auto;
     white-space: pre-wrap;
 }
 #msg_log p {
diff --git a/src/frontend/index.js b/src/frontend/index.js
index 8bb5ff9..9398ac8 100644
--- a/src/frontend/index.js
+++ b/src/frontend/index.js
@@ -1002,9 +1002,7 @@ function generateSession(sessionId, session) {
         li.classList.add("is_verified");
     }
     if (!session.seen) {
-        let marker = document.createElement("div");
-        marker.classList.add("not_seen_marker");
-        li.appendChild(marker);
+        li.classList.add("not_seen");
     }
     if (sessionId == currentSessionId) {
         li.classList.add("current");