fix style

src/features/WelcomePage/WelcomePage.vue

@@ -44,8 +44,8 @@ onUnmounted(() => clearInterval(interval));
     @vnodeMounted="modalMounted"
   >
     <div class="welcome-modal tw-mb-6">
-      <div class="smile-png" />
-      <div class="tw-ml-5">
+      <div class="smile-png tw-mr-4" />
+      <div>
         <div class="tw-mb-4">欢迎使用考试系统，祝顺利完成考试！</div>
         <div class="em-text">
           姓名：{{ store.user.name }} - {{ " " }}
@@ -67,7 +67,7 @@ onUnmounted(() => clearInterval(interval));
   margin-left: 20px;
 }
 .smile-png {
-  width: 40px;
+  min-width: 40px;
   height: 40px;
   background: url(./smile-icon.png);
 }