diff --git a/css/body.css b/css/body.css
index ddd8d63..285f7e7 100644
--- a/css/body.css
+++ b/css/body.css
@@ -3,7 +3,7 @@ body {
     font-family: "Arial", sans-serif;
 
     /* 背景图 */
-    background-image: url("../blackboard/test.jpg"); /* 图片地址 */
+    background-image: url("../blackboard/.jpg"); /* 图片地址 */
     background-size: cover;                  /* 自动缩放并裁剪 */
     background-position: center center;      /* 居中裁剪 */
     background-repeat: no-repeat;            /* 不重复平铺 */
diff --git a/css/max_width.css b/css/max_width.css
index 0be153f..1a17bd6 100644
--- a/css/max_width.css
+++ b/css/max_width.css
@@ -32,7 +32,8 @@
     }
 
     .swbutton {
-        background-color: rgba(200, 200, 200, 0.1);
+        color: black;
+        background-color: rgba(200, 200, 200, 0.2);
         backdrop-filter: blur(8px);
         -webkit-backdrop-filter: blur(8px);
         transition: background-color 1s ease, transform 0.5s ease;