diff --git a/disk_bg.webp b/disk_bg.webp
new file mode 100644
index 0000000..60d958b
Binary files /dev/null and b/disk_bg.webp differ
diff --git a/hk_style.css b/hk_style.css
index 1257adc..f781aa2 100644
--- a/hk_style.css
+++ b/hk_style.css
@@ -116,7 +116,7 @@ header{
   background-color: rgb(255 255 255 / 50%);
 }
 body{
-  background: url("https://git.chenx221.cyou/chenx221/Public_Assets/raw/branch/main/disk_bg.jpg") center;
+  background: url("https://git.chenx221.cyou/chenx221/Public_Assets/raw/branch/main/disk_bg.webp") center;
   background-size: cover;
   background-repeat: no-repeat no-repeat;
   /*! background-position: center center; */