fixed Cascader style error

examples/routers/cascader.vue

@@ -1,66 +1,59 @@
 <template>
-    <div style="margin: 100px;width: 300px;">
-        <Cascader v-model="value" :data="data" change-on-select></Cascader>
-    </div>
+    <Cascader v-model="value3" :data="data" filterable style="width: 400px"></Cascader>
 </template>
 <script>
     export default {
         data () {
             return {
-                value: ['beijing', 'gugong'],
-                data: []
-            }
-        },
-        mounted () {
-            setTimeout(() => {
-                this.data = [{
-                    value: 'beijing',
+                data: [{
+                    value: 1,
                     label: '北京',
                     children: [
                         {
-                            value: 'gugong',
+                            value: 11,
                             label: '故宫'
                         },
                         {
-                            value: 'tiantan',
+                            value: 12,
                             label: '天坛'
                         },
                         {
-                            value: 'wangfujing',
+                            value: 13,
                             label: '王府井'
                         }
                     ]
                 }, {
-                    value: 'jiangsu',
+                    value: 2,
                     label: '江苏',
                     children: [
                         {
-                            value: 'nanjing',
+                            value: 21,
                             label: '南京',
                             children: [
                                 {
-                                    value: 'fuzimiao',
+                                    value: 211,
                                     label: '夫子庙',
                                 }
                             ]
                         },
                         {
-                            value: 'suzhou',
+                            value: 22,
                             label: '苏州',
                             children: [
                                 {
-                                    value: 'zhuozhengyuan',
+                                    value: 221,
                                     label: '拙政园',
                                 },
                                 {
-                                    value: 'shizilin',
+                                    value: 222,
                                     label: '狮子林',
                                 }
                             ]
                         }
                     ],
-                }];
-            }, 100)
+                }],
+                value3: []
+            }
         }
     }
 </script>

src/styles/components/cascader.less

@@ -93,6 +93,7 @@
         text-align: center;
         color: @btn-disable-color;
         li:not([class^=ivu-]){
+            list-style: none;
             margin-bottom: 0;
         }
     }