fa fa-plus icons code example
Example 1: plus sign icon font awesome
Font Awesome 5: <i class="fas fa-plus"></i>
Example 2: plus sign icon font awesome
Font Awesome 5 CDN: <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.1/css/all.min.css" integrity="sha512-+4zCK9k+qNFUR5X+cKL9EIR+ZOhtIloNl9GIKS57V1MyNsYpYcUrUeQc9vNfzsWfV28IaLL3i96P9sdNyeRssA==" crossorigin="anonymous" />