[jQuery] question

I try to make a different between , new or used car Listing by add color text and add div.
(on HomePage – > RECENTLY ADDED LISTINGS )
New = Green Color
Used = Red Color
it work for me great ,

<script>
jQuery(“.wlt_shortcode_cartype:contains(‘New’)”).css({‘background-color’:’yellow’,’color’:’green’}).append(‘<div class=”highlight”>red</div>’);
jQuery(“.wlt_shortcode_cartype:contains(‘Used’)”).css({‘background-color’:’yellow’,’color’:’red’}).append(‘<div class=”highlight”>red</div>’);
</script>

but i dont know why from some reason , it duplicate
demo site:https://yogev.gtxserv.com/ipets/
username : admin
password : 115599