feat(首页): 标准分类

src/views/echartHome/standardClassification.vue

 <template>
-  <div ref="chart" style="width: 100%; height: 300px"></div>
+  <div
+    ref="chart"
+    style="width: 100%; height: 300px; display: flex; justify-content: center"
+  ></div>
 </template>
 <script>
 export default {
@@ -36,8 +39,7 @@ export default {
           {
             name: 'Nightingale Chart',
             type: 'pie',
-            radius: ['40%', '50%'],
-            center: ['50%', '50%'],
+            radius: ['30%', '40%'],
             roseType: 'area',
             itemStyle: {
               borderRadius: 10