Update index.tsx

src/views/tempo-practice/index.tsx

@@ -180,7 +180,7 @@ export default defineComponent({
         class={[
           styles.tempoPractice,
           state.win === 'pc' ? styles.pc : '',
-          state.win === 'modal' ? styles.modal : ''
+          state.platform === 'modal' ? styles.modal : ''
         ]}>
         <div class={styles.head}>
           {props.modeType !== 'courseware' && (