SOURCE

<div>
	<p class="scale">Scaling</p>
</div>

* {
    box-sizing: border-box;
}

html {
    font-family: sans-serif;
}

div {
    width: 150px;
    margin: 0 auto;
}

p {
    padding: 10px 5px;
    border: 3px solid black;
    border-radius: 20px;
    width: 150px;
    font-size: 1.2rem;
    text-align: center;
}

.scale {
    transition: all 2s;
}

div:hover .scale {
  transform: scale(2);
}