样式调整

src/components/app-form-item/app-form-item.vue

 <template>
-  <ion-item :class="classes">
+  <ion-item :class="[classes,labelPos.toLowerCase()]">
         <template v-if="uiStyle == 'STYLE2'">
             <ion-label :style="{minWidth:labelWidth+'px'}" position="floating" v-if="isShowCaption && labelWidth > 0"><span v-if="required" class="required">* </span>{{isEmptyCaption ? '' : caption}}</ion-label>
             <slot></slot>