需要添加客服，二维码，扫码功能

utils/storage.js

@@ -47,3 +47,18 @@ export const getSig = () => {
 export const removeSig = () => {
   return uni.removeStorageSync(STORAGE_KEYS.TENCENT_USER_SIG)
 }
+
+/** 保存字体大小 */
+export const setFontSize = v => {
+  return uni.setStorageSync(STORAGE_KEYS.FONT_SIZE, v)
+}
+
+/** 获取字体大小 */
+export const getFontSize = () => {
+  return uni.getStorageSync(STORAGE_KEYS.FONT_SIZE) || 26
+}
+
+/** 删除字体大小 */
+export const removeFontSize = () => {
+  return uni.removeStorageSync(STORAGE_KEYS.FONT_SIZE)
+}