Hi @ashishkhadpe,
In touch UI, WCM mode is known as layers and the same is saved in cookies in the name "wcmmode". We should listen to the event named - cq-layer-activated -> get the cookie value -> write CSS via jQuery targeting specific layer (In this case, it is Edit)
Sample script for reference:
$(document).on("cq-layer-activated", function(){
var wcmmodeVal = $.cookie("wcmmode");
console.log("WCM Mode = "+wcmmodeVal);
if(wcmmodeVal == "edit"){
$(".cq-droptarget").css("border", "2px solid red"); // Target your desired class and write CSS accordingly
}
});