Input: remove blue border of Select when prepended/appended

packages/theme-chalk/src/input.scss

@@ -233,6 +233,9 @@
       border-top-left-radius: 0;
       border-bottom-left-radius: 0;
     }
+    .el-select .el-input.is-focus .el-input__inner {
+      border-color: transparent;
+    }
   }
 
   @include m(append) {
@@ -240,6 +243,9 @@
       border-top-right-radius: 0;
       border-bottom-right-radius: 0;
     }
+    .el-select .el-input.is-focus .el-input__inner {
+      border-color: transparent;
+    }
   }
 }