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Check This: https://codepen.io/DevLorenzo/pen/vYXbJvd
DevLorenzo
Check This: https://codepen.io/DevLorenzo/pen/vYXbJvd/*HTML*/
<button><span>3 replies</span></button>
/*CSS*/
button {width:6em}
button:hover span {display:none}
button:hover:before {content:"Reply!"}