diff --git a/media/less/sign/sign.less b/media/less/sign/sign.less
index 45ce33b3129be5cbfc2704598bf9b097778dde6d..3ad8e376f1adad019cc0001ccc1295d885939b85 100644
--- a/media/less/sign/sign.less
+++ b/media/less/sign/sign.less
@@ -12,10 +12,10 @@
     }
 }
 
-input#signin_b {
+input[type="button"] {
     -webkit-appearance: none;
-    -webkit-border-radius: 5px;
-    border-radius: 5px;
+    -webkit-border-radius: 0px;
+    border-radius: 0px;
 }
 
 h2 {