退出按钮样式调整

src/layouts/MainLayout.vue

@@ -14,7 +14,7 @@
 
         <q-toolbar-title> 北京RTSS测试系统 </q-toolbar-title>
 
-        <div class="q-gutter-sm row items-center no-wrap">
+        <div class="q-gutter-sm no-wrap">
           <q-btn
             round
             dense
@@ -25,7 +25,7 @@
             v-if="$q.screen.gt.sm"
           >
           </q-btn>
-          <q-btn-dropdown icon="person">
+          <q-btn-dropdown flat stretch icon="person">
             <q-list>
               <q-item clickable v-close-popup @click="showUserInfo">
                 <q-item-section>