Hi Mehtap,
I think a space is missing. See below, that should work.
.mx-listview-searchbar .btn{
width: auto;
.glyphicon-refresh:before {
content: "\e014";
}
}
Also, the way you’ve written it would be applied to all list view search. If you just want to change one create a custom class and include the styling inside the custom class.
Hope it helps!