fix:修改材料列表图片展示

sample-form-client-ui/admin/src/components/MateralsList.vue

@@ -23,8 +23,10 @@
           @click="handleWrite"
         >
           <div class="pic-box">
+            <div class="pic-img-box">
               <img class="pic" :src="api + v.preViewPath" />
             </div>
+          </div>
           <div class="for-short">{{ v.materialName }}</div>
           <div class="matterDatumList-name">
             {{ v.materiaFullName }}
@@ -141,10 +143,16 @@ export default {
     padding: 16px 24px;
     background: #f4f6fc;
     border-radius: 16px;
-    img {
+    .pic-img-box {
       width: 100%;
       height: 100%;
-      object-fit: cover;
+      border-radius: 4px;
+      overflow: hidden;
+    }
+    img {
+      width: 100%;
+      min-height: 100%;
+      border-radius: inherit;
     }
   }
   .for-short {