diff --git a/frontend/src/Board/Components/MessageBubble.css b/frontend/src/Board/Components/MessageBubble.css
index 3d05f86..28549f2 100644
--- a/frontend/src/Board/Components/MessageBubble.css
+++ b/frontend/src/Board/Components/MessageBubble.css
@@ -122,4 +122,4 @@
 		/* Adjust padding */
 		font-size: 14px;
 	}
-}
\ No newline at end of file
+}
diff --git a/frontend/src/Board/index.tsx b/frontend/src/Board/index.tsx
index 6a9dd8f..73b696b 100644
--- a/frontend/src/Board/index.tsx
+++ b/frontend/src/Board/index.tsx
@@ -59,7 +59,7 @@ function Board() {
 
 	// スクロール制御用の参照
 	const messagesAreaRef = useRef<HTMLDivElement>(null);
-	const isAtBottomRef = useRef(true);
+	const isAtBottomRef = useRef(false);
 	// 二重フェッチ防止用
 	const hasFetchedRef = useRef(false);
 
diff --git a/frontend/src/Solo/Components/MessageBubble.css b/frontend/src/Solo/Components/MessageBubble.css
index 1dd12f0..230be03 100644
--- a/frontend/src/Solo/Components/MessageBubble.css
+++ b/frontend/src/Solo/Components/MessageBubble.css
@@ -112,4 +112,4 @@
 		/* Adjust padding */
 		font-size: 14px;
 	}
-}
\ No newline at end of file
+}
diff --git a/frontend/src/Solo/Solo.css b/frontend/src/Solo/Solo.css
index cc01967..6116630 100644
--- a/frontend/src/Solo/Solo.css
+++ b/frontend/src/Solo/Solo.css
@@ -209,7 +209,6 @@
 }
 
 @keyframes floating-text {
-
 	0%,
 	100% {
 		transform: translateY(0);
@@ -221,7 +220,6 @@
 }
 
 @keyframes bounce {
-
 	0%,
 	100% {
 		transform: scale(1) translateY(0);
@@ -402,4 +400,4 @@
 		width: 30px;
 		height: 30px;
 	}
-}
\ No newline at end of file
+}