修改dashboard样式

src/views/dashboard/systemDash.vue

@@ -2,8 +2,8 @@
   <div class="routerWapper">
     <!-- {{$cookie.get('token')}} -->
     <!-- {{systemList}} -->
-    <a-card title="选择登录系统" style="margin: 20px; padding: 20px; height: 100%; border: 2px dashed lightgrey">
-      <a-card-grid v-for="(item, index) in systemList" :key="index" style="width:25%;text-align:center; cursor: pointer" @click="loadPage(item)">
+    <a-card title="选择登录系统" headStyle='background-color: #fff' style="display: flex; flex-direction: column; justify-content: flex-start; background-color: #F0F2F5; margin: 40px 30px 30px 30px; height: 100%; border: 2px dashed lightgrey">
+      <a-card-grid v-for="(item, index) in systemList" :key="index" style="width:calc(25% - 42px);text-align:center; cursor: pointer; margin: 20px; background-color: #fff" @click="loadPage(item)">
         <a-row type='flex' justify='center' align='middle'>
           <a-col :span='16'>
             {{item.name}}