Musare/frontend/components/404.vue

<template>
  <div class="wrapper">
    <h3>
      <strong>404</strong>&nbsp;Not Found
    </h3>
    <router-link class="button is-black" to="/">Back to Home</router-link>
  </div>
</template>

<style lang="scss" scoped>
* {
  margin: 0;
  padding: 0;
}

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

a {
  margin-top: 15px;
}
</style>