add facebook button to website html

Step 1) Add HTML:

Example

<!-- Add icon library -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">

<!-- Add font awesome icons -->
<a href="#" class="fa fa-facebook"></a>
<a href="#" class="fa fa-twitter"></a>
...

Step 2) Add CSS:

Simple example

/* Style all font awesome icons */
.fa {
    padding: 20px;
    font-size: 30px;
    width: 50px;
    text-align: center;
    text-decoration: none;
}

/* Add a hover effect if you want */
.fa:hover {
    opacity: 0.7;
}

/* Set a specific color for each brand */

/* Facebook */
.fa-facebook {
    background: #3B5998;
    color: white;
}

/* Twitter */
.fa-twitter {
    background: #55ACEE;
    color: white;
}

add facebook button button to website html