声调图标大小

src/views/book/courseware/preview/components/pinyin_base/PinyinBasePreview.vue

@@ -158,7 +158,7 @@
             ]"
             @click="chooseTone(con_preview[0], value)"
           >
-            <SvgIcon :icon-class="img" />
+            <SvgIcon :icon-class="img" size="16" />
           </span>
         </div>
         <template v-else-if="data.property.fun_type !== 'mark' && isEnable(data.property.is_enable_voice_answer)">