add layout

+<template>
+  <div class="layout">
+    <slot></slot>
+  </div>
+</template>
+
+<script>
+  export default {
+    name: 'Layout',
+  };
+</script>
+
+<style lang="scss">
+  .layout {
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    overflow: hidden;
+    font-size: 24px;
+  }
+</style>