That's how <b> tags are made bold etc. There's a css file that's basically loaded before everything else to apply those default styles. Here's WebKit/Safari's f

That's how <b> tags are made bold etc. There's a css file that's basically loaded before everything else to apply those default styles. Here's WebKit/Safari's for example: https://github.com/WebKit/WebKit/blob/main/Source/WebCore/css/html.css https://github.com/WebKit/WebKit/blob/main/Source/WebCore/cs... Try turning on user agent styles & user agent shadow dom in your dev tools settings.