It’s time to learn how to open and use the Developer Tools that are built into most web browsers. That is how you will be able to easily answer questions like this for yourself without waiting, and it will lead to great improvements in your web development ability and speed.
In either Chrome or Firefox, while viewing the page that you wish to inspect, press Control-Shift-I. (that is on a PC… I suppose on a Mac it is probably Command-Shift-I).
There are many instructional pages and videos online about what to do next after you open the Developer Tools. But the first and simplest thing you will want to learn is how to point the Tools at a specific element on the live page so that the Tools window will show the HTML structure, including all the CSS selectors for any element that you point to with mouse or touchpad.
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This reply was modified 6 years ago by
cataphor. Reason: augmented answer a little