Nuxt/lib/app/components/nuxt-error.vue

<template>
<div class="__nuxt-error-page">
<div class="error">
  <svg xmlns="http://www.w3.org/2000/svg" width="90" height="90" fill="#DBE1EC" viewBox="0 0 48 48"><path d="M22 30h4v4h-4zm0-16h4v12h-4zm1.99-10C12.94 4 4 12.95 4 24s8.94 20 19.99 20S44 35.05 44 24 35.04 4 23.99 4zM24 40c-8.84 0-16-7.16-16-16S15.16 8 24 8s16 7.16 16 16-7.16 16-16 16z"/></svg>

  <div class="title">{{ message }}</div>
  <p class="description" v-if="statusCode === 404">
    <nuxt-link class="error-link" to="/"><%= messages.back_to_home %></nuxt-link>
  </p>
  <% if(debug) { %>
  <p class="description" v-else><%= messages.client_error_details %></p>
  <% } %>

  <div class="logo">
    <a href="https://nuxtjs.org" target="_blank" rel="noopener"><%= messages.nuxtjs %></a>
  </div>
</div>
</div>
</template>

<script>
export default {
  name: 'nuxt-error',
  props: ['error'],
  head () {
    return {
      title: this.message,
      meta: [
        {
          name: 'viewport',
          content: 'width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no'
        }
      ]
    }
  },
  <% if(debug) { %>
  data () {
    return {
      mounted: false
    }
  },
  mounted () {
    this.mounted = true
  },
  <% } %>
  computed: {
    statusCode () {
      return (this.error && this.error.statusCode) || 500
    },
    message () {
      return this.error.message || '<%= messages.client_error %>'
    }
  }
}
</script>

<style>
.__nuxt-error-page {
  background: #F7F8FB;
  color: #47494E;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  font-family: sans-serif;
  font-weight: 100 !important;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased; 
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
.__nuxt-error-page .error {
  max-width: 450px;
}
.__nuxt-error-page .title {
  font-size: 1.5rem;
  margin-top: 15px;
  color: #47494E;
  margin-bottom: 8px; 
}
.__nuxt-error-page .description {
  color: #7F828B;
  line-height: 21px;
  margin-bottom: 10px;
}
.__nuxt-error-page a {
  color: #7F828B !important;
  text-decoration: none;
}
.__nuxt-error-page .logo {
  position: fixed;
  left: 12px;
  bottom: 12px;
}
</style>