This script shows two ways to make text blink in a Web page. These are extremely simple examples. When I read that the blink tag functionality had been removed from all of the most popular browsers, I had a feeling of loss, in spite of the fact that I have never used the blink tag in more than 20 years of Web development. I guess I succeded in overcoming the loss. All of the code is in this page, so look at the page source if you would like to make something blink, or fade in and out.
If you are interested in the code, use view source (Ctrl+u).
I tested in Chrome, IE, Microsoft Edge, Firefox, and Opera browsers.