Make the text blink when the value is 1

[Fahd]

Works for me in Firefox 103. It uses CSS animation for blinking. This is a standard feature supported by all modern browsers.

Hi Guys, 

In the last two weeks, the function worked fine, but I just find out that it doesn't work anymore as long as the object is read-only,  
If I disable the read-only function it will start working again. 
nb: I didn't change anything form the CSS and JS code