.fa-custom-svg:before {

  content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' class='svg-icon' viewBox='0 0 20 20'%3E%3Cpath d='M17.218,2.268L2.477,8.388C2.13,8.535,2.164,9.05,2.542,9.134L9.33,10.67l1.535,6.787c0.083,0.377,0.602,0.415,0.745,0.065l6.123-14.74C17.866,2.46,17.539,2.134,17.218,2.268 M3.92,8.641l11.772-4.89L9.535,9.909L3.92,8.641z M11.358,16.078l-1.268-5.613l6.157-6.157L11.358,16.078z'%3E%3C/path%3E%3C/svg%3E");

  display: block;

  height: 20px;

  width: 20px;

}

​

​

​