*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}.fc,body{background:#fff}.teacher-shell{padding-bottom:calc(64px + env(safe-area-inset-bottom))}.teacher-tabbar{padding-bottom:env(safe-area-inset-bottom)}.lesson-card{border:1px solid #f0f0f0;border-radius:10px;padding:12px;margin-bottom:10px;background:#fff}.lesson-card--done{background:#fafafa}.touch-btn{min-height:44px;font-size:15px}@media (max-width:640px){.ant-table{font-size:13px}}