How can I still display global navbar when I use a custom layout?

[KapiAI]

I am using a custom layout named Fullwidth, Here is my index.md:

---
layout: FullWidth
---

my content

And I create the Fullwidth.vue:

<template>
  <Content />
</template>

<script setup></script>

<style lang="scss" scoped></style>

Finally，I config the Fullwidth.vue in .vuepresss/client.js:

export default defineClientConfig({
  layouts: {
    FullWidth,
  }
})

But when I visited the page, I found that the entire page only showed "my content" without the header navbar. I expected the navbar to still be displayed. What should I do to keep the navbar visible?

[Mister-Hope]

With slots, https://vuejs.press/advanced/cookbook/making-a-theme-extendable.html