Hide Viblo slider

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Hide Viblo slider",
    "description": "The slider in the bottom-right section of Viblo.asia website hurts my eyes. So I add a simple css to hide this section",
    "version": "1.1",
    "manifest_version": 3,
    "icons": {
        "16": ".\/images\/icon-16.png",
        "32": ".\/images\/icon-32.png",
        "48": ".\/images\/icon-48.png",
        "64": ".\/images\/icon-64.png",
        "128": ".\/images\/icon-128.png"
    },
    "content_scripts": [
        {
            "matches": [
                "*:\/\/viblo.asia\/*"
            ],
            "css": [
                "index.css"
            ]
        }
    ]
}