diff --git a/tfo_nota b/tfo_nota
new file mode 100644
index 0000000..20039fa
--- /dev/null
+++ b/tfo_nota
@@ -0,0 +1,2 @@
+黑白滤镜css:
+html{filter: url("data:image/svg xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale");filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);-webkit-filter: grayscale(1);}
\ No newline at end of file
diff --git a/theme/tfo_md.php b/theme/tfo_md.php
index 0561678..37327f3 100644
--- a/theme/tfo_md.php
+++ b/theme/tfo_md.php
@@ -10,8 +10,7 @@
     <link rel="icon" href="<?php echo $_SERVER['base_disk_path'];?>favicon.ico" type="image/x-icon" />
     <link rel="shortcut icon" href="<?php echo $_SERVER['base_disk_path'];?>favicon.ico" type="image/x-icon" />
     <style type="text/css">
-    /*html{filter: url("data:image/svg xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale");filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);-webkit-filter: grayscale(1);}*/
-        body{font-family:'-apple-system,BlinkMacSystemFont,Helvetica Neue,PingFang SC,Microsoft YaHei,Source Han Sans SC,Noto Sans CJK SC,WenQuanYi Micro Hei,sans-serif',Helvetica,Arial,sans-serif;font-size:14px;line-height:1em;color:#000;background-color:#f7f7f9;<?php if (getConfig('background')) { ?>background-repeat:no-repeat;background-position:center;background-size:cover;background-attachment:fixed;background-image:url("<?php echo getConfig('background'); ?>");<?php } ?>}
+      body{font-family:'-apple-system,BlinkMacSystemFont,Helvetica Neue,PingFang SC,Microsoft YaHei,Source Han Sans SC,Noto Sans CJK SC,WenQuanYi Micro Hei,sans-serif',Helvetica,Arial,sans-serif;font-size:14px;line-height:1em;color:#000;background-color:#f7f7f9;<?php if (getConfig('background')) { ?>background-repeat:no-repeat;background-position:center;background-size:cover;background-attachment:fixed;background-image:url("<?php echo getConfig('background'); ?>");<?php } ?>}
         a{color:#24292e;cursor:pointer;text-decoration:none}
         ion-icon{font-size:16px;vertical-align:bottom}
 	input{border:none;transition-duration: 0.3s;border-radius:16px;background-color:transparent;color:#24292e}
diff --git a/theme/tfo_mdtr.php b/theme/tfo_mdtr.php
index 195167f..c87d57c 100644
--- a/theme/tfo_mdtr.php
+++ b/theme/tfo_mdtr.php
@@ -10,9 +10,7 @@
     <link rel="icon" href="<?php echo $_SERVER['base_disk_path'];?>favicon.ico" type="image/x-icon" />
     <link rel="shortcut icon" href="<?php echo $_SERVER['base_disk_path'];?>favicon.ico" type="image/x-icon" />
     <style type="text/css">
-    /*html{filter: url("data:image/svg xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale");filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);-webkit-filter: grayscale(1);}*/
-        body{font-family:'-apple-system,BlinkMacSystemFont,Helvetica Neue,PingFang SC,Microsoft YaHei,Source Han Sans SC,Noto Sans CJK SC,WenQuanYi Micro Hei,sans-serif',Helvetica,Arial,sans-serif;font-size:14px;line-height:1em;color:#000;background-color:#f7f7f9;
-        body{font-family:'-apple-system,BlinkMacSystemFont,Helvetica Neue,PingFang SC,Microsoft YaHei,Source Han Sans SC,Noto Sans CJK SC,WenQuanYi Micro Hei,sans-serif',Helvetica,Arial,sans-serif;font-size:14px;line-height:1em;color:#000;background-color:#f7f7f9;<?php if (getConfig('background')) { ?>background-repeat:no-repeat;background-position:center;background-size:cover;background-attachment:fixed;background-image:url("<?php echo getConfig('background'); ?>");<?php } ?>}
+      body{font-family:'-apple-system,BlinkMacSystemFont,Helvetica Neue,PingFang SC,Microsoft YaHei,Source Han Sans SC,Noto Sans CJK SC,WenQuanYi Micro Hei,sans-serif',Helvetica,Arial,sans-serif;font-size:14px;line-height:1em;color:#000;background-color:#f7f7f9;<?php if (getConfig('background')) { ?>background-repeat:no-repeat;background-position:center;background-size:cover;background-attachment:fixed;background-image:url("<?php echo getConfig('background'); ?>");<?php } ?>}
         a{color:#24292e;cursor:pointer;text-decoration:none}
         ion-icon{font-size:16px;vertical-align:bottom}
 	input{border:none;transition-duration: 0.3s;border-radius:16px;background-color:transparent;color:#24292e}