验收反馈修改。

components/product/component/ComponentDetail.vue

@@ -38,7 +38,7 @@
                    :class="{'more-description':showMoreDesc}"
                    v-if="store.description">
                 {{[store.description, showMoreDesc] | descriptionFilter}}
-                <span @click="showMoreDesc = !showMoreDesc" >
+                <span @click="showMoreDesc = !showMoreDesc" v-if="store.description.length > 30">
                   <img :src="!showMoreDesc?'/images/component/circle-arrow-down.png':'/images/component/circle-arrow-up.png'" alt="">
                   <!--<i class="iconfont" :class="{'icon-shouqi':showMoreDesc,'icon-shouqi1':!showMoreDesc}"></i>-->
                   <span v-text="showMoreDesc ? '收起' : '展开'"></span>
@@ -297,6 +297,8 @@
     cursor: pointer;
     display: inline-block;
     float: right;
+    position: relative;
+    bottom: 2px;
   }
   .componentDetail .container .component-message .description >span >img {
     vertical-align: middle;