refactor: 优化样式

Author: wxg0103

ui/src/styles/app.scss

@@ -742,3 +742,8 @@ h5 {
 .record-tip-confirm {
   max-width: 800px !important;
 }
+
+//企业微信
+.wwLogin_qrcode_head {
+  padding:20px 0 !important;
+}

ui/src/views/login/components/wecomQrCode.vue

@@ -67,9 +67,7 @@ init()
 
 <style scoped lang="scss">
 .wecom-qr {
-  margin-top: -40px;
-}
-:deep(.wwLogin_qrcode_head) {
-  padding: 0 !important;
+  margin-top: -20px;
+  height: 331px;
 }
 </style>