/* 登录页不下载 700KB 图标字体；登录后再由 overlay 注入 @font-face */
.material-icons, .material-icons-round {
  font-weight: normal;
  font-style: normal;
  font-size: 0;
  width: 24px;
  height: 24px;
  display: inline-block;
  overflow: hidden;
  line-height: 1;
  speak: never;
}