diff --git a/css/common.css b/css/common.css
index b8105cf..1f50181 100644
--- a/css/common.css
+++ b/css/common.css
@@ -79,7 +79,7 @@ body {
 .base .left.input-active {
   border-color: #c4c7ce;
   border-radius: 0 0 4px 10px;
-  border-top: none;
+  border-top-width: 0;
 }
 .base .left .text {
   font-family: "PingFangSC-Regular", "PingFang SC", sans-serif;
diff --git a/css/common.less b/css/common.less
index 0c0d5a3..00f53e7 100644
--- a/css/common.less
+++ b/css/common.less
@@ -94,7 +94,7 @@ body {
         &.input-active {
             border-color: #c4c7ce;
             border-radius: 0 0 4px 10px;
-            border-top: none;
+            border-top-width: 0;
         }
 
         .text {