fix: tabbar文字居中修改 (#528)

* fix: checkbox间距调整，官网案例样式调整

* fix: checkbox样式调整

* fix: taro drag

* fix: taro drag doc

* fix: checkbox间距调整

* upd: actionsheet shortpassword taro doc

* fix: password taro upd

* fix: drag taro demo

* fix: taro checkbox radio的demo样式优化

* fix: taro checkbox样式优化

* fix: checkbox h5样式优化

* fix: radio的demo调整

* fix: tabbar文字居中修改

Co-authored-by: love_forever <1039168735@qq.com>

src/packages/__VUE/tabbaritem/index.scss

@@ -14,7 +14,9 @@
 
   &_icon-box {
     padding: 0px;
-    display: inline-block;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
     position: relative;
 
     &_tips {