アイコンを左右反転

反転

.telicon::before {
    display: inline-block;
    transform: scaleX(-1);
    font-family: "Font Awesome 5 Free";
    content: "f095";
}

 

回転

.telicon::before {
    display: inline-block;
    transform: rotate(100deg);	
    font-family: "Font Awesome 5 Free";
    content: "f095";
}