<i class="tf tf-fk"></i>
<style> .my-class-name:before{ content: "\E001"; } </style> <i class="tf my-class-name"></i>
<style> .tf-binary { font-family: "tf-font-icons"; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none; } </style> <i class="tf-binary"> </i>