1.bi-icon { 2 mask-repeat: no-repeat; 3 mask-position: center; 4 mask-size: cover; 5 -webkit-mask-repeat: no-repeat; 6 -webkit-mask-position: center; 7 -webkit-mask-size: cover; 8 width: 1rem; 9 height: 1rem; 10 display:inline-block; 11}