JSFiddle - React, Tailwind, and code Playground

HTML

<button class='blinking'>BLINKING BUTTON</button>

CSS

.blinking{
    padding:20px;
    animation:blinking 1s infinite;
}
@keyframes blinking{
    0%{color:rgba(0, 0, 0, 1);}
    50%{color:rgba(0, 0, 0, 0);}
    100%{color:rgba(0, 0, 0, 1);}
}