not remove shadow of button and form

src/client/styles/scss/_override-bootstrap-variables.scss

@@ -39,7 +39,6 @@ $border-radius-small: 0;
 $btn-border-radius: 0;
 $btn-border-radius-lg: 0;
 $btn-border-radius-sm: 0;
-$btn-focus-width: 0px;
 
 
 
@@ -48,7 +47,6 @@ $btn-focus-width: 0px;
 $input-border-radius: 0;
 $input-border-radius-lg: 0;
 $input-border-radius-sm: 0;
-$input-focus-box-shadow: none;
 
 //== Navs