I am creating an Adblocker clone using manifest 3, and for some reason whenever the ad blocker is on it removes both the ads on the site and the css stylesheet, leaving only the html file.

here is my manifest file:

{
    "name" : "Rock AdBlocker", 
    "description" : "Block all annoying ads", 
    "manifest_version" : 3,
    "version" : "0.1.0",
    "permissions" : ["declarativeNetRequest"],
    "declarative_net_request" : {
        "rule_resources" : [
            {
                "id" : "ruleset_1", 
                "enabled" : true,
                "path" : "rules.json"
            }
        ]
    }
}

and here is my rules.json file that is referenced above:

[
    {
        "id" : 1, 
        "priority" : 1, 
        "action" : {"type" : "block"}, 
        "condition" : {"urlfilter" : "*://*doubleclick.net/*"}
    }, 
    {
        "id" : 2, 
        "priority": 1, 
        "action" : {"type" : "block"}, 
        "condition" : {"urlfilter" : "*://googleadservices.com/*"}
    }
]

so what might be the issue and how to fix it? I am still new to this whole extensions stuff.