text-decoration-line: blinkThe text-decoration: blink CSS declaration flashes text between visible and invisible.animationAnimationlimitedhttps://drafts.csswg.org/css-text-decor-3/#valdef-text-decoration-line-blinkhttps://developer.mozilla.org/docs/Web/CSS/Reference/Properties/text-decoration-linecss.properties.text-decoration-line.blinkhttps://nowyoucanuse.com/features--text-decoration-line-blink.html