diff --git a/front/src/App.css b/front/src/App.css
index b9d355d..eee93f7 100644
--- a/front/src/App.css
+++ b/front/src/App.css
@@ -1,42 +1,18 @@
-#root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
+/* 滚动条样式（全局，参考 v1） */
+::-webkit-scrollbar {
+  width: 10px;
+  height: 10px;
 }
 
-.logo {
-  height: 6em;
-  padding: 1.5em;
-  will-change: filter;
-  transition: filter 300ms;
-}
-.logo:hover {
-  filter: drop-shadow(0 0 2em #646cffaa);
-}
-.logo.react:hover {
-  filter: drop-shadow(0 0 2em #61dafbaa);
+::-webkit-scrollbar-track {
+  background: transparent;
 }
 
-@keyframes logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
+::-webkit-scrollbar-thumb {
+  background: #888;
+  border-radius: 5px;
 }
 
-@media (prefers-reduced-motion: no-preference) {
-  a:nth-of-type(2) .logo {
-    animation: logo-spin infinite 20s linear;
-  }
-}
-
-.card {
-  padding: 2em;
-}
-
-.read-the-docs {
-  color: #888;
+::-webkit-scrollbar-thumb:hover {
+  background: #555;
 }