style: change new account design

src/components/UserNew.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="user-new columns">
+  <div class="user-new box columns">
     <div class="column is-5" v-if="user">
       <div class="field is-horizontal">
         <div class="field-label is-normal">
@@ -22,7 +22,7 @@
         <div class="field-body">
           <div class="field">
             <p class="control">
-              <input required class="input" type="text" maxlength="20" v-model="newUser.alias" />
+              <input required class="input" type="text" maxlength="20" v-model="newUser.alias" :placeholder="newUser.userId" />
             </p>
             <p class="help is-info">Nom utilisé dans ce compte</p>
             <p
@@ -70,3 +70,9 @@ export default class UserNew extends Vue {
   }
 }
 </script>
+
+<style>
+.user-new {
+  margin: 5px 0;
+}
+</style>