自定义组件wxss里面不能用@font-face?

VM17251:2 Some selectors are not allowed in component wxss, including tag name selectors, ID selectors, and attribute selectors.(./components/cell/cell.wxss:62:1)This wxss file is ignored.一放进去就给我报错那我要用小图标怎么办？只能用图片代替吗？