Расширение Chrome Добавить CSS на страницу
{
"name": "Extension Name,
"description": "description",
"version": "1.0",
"manifest_version": 3,
"icons": {
"48": "/icons/48.png",
"128": "/icons/128.png"
},
"content_scripts": [{
"matches": ["<all_urls>"],
"css": ["mystyle.css"]
}]
}
Button