How to create a drop down menu using only HTML and CSS

In this video you will see how to create a drop down menu without using JavaScript
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Sample code for codepen: https://codepen.io/igorrybalko/pen/EaaopVO
Or you can copy the code from the website: https://webstep.top/html-css/how-to-create-a-drop-down-menu-using-only-html-and-css/
Music in the video: https://www.youtube.com/watch?v=_ThzborvkD8