Partie css du code

<style>

/* bouton */
.button {
border: none;
color: white;
padding: 16px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
transition-duration: 0.4s;
cursor: pointer;
}

.button1 {
background-color: white;
color: black;
border: 2px solid #4CAF50;
}

.button1:hover {
background-color: #4CAF50;
color: white;
}

</style>

 

Partie HTML

<button class="button button1" ><a href="https://ynimen.info">Redirection vers ... </a></button>