Add button load more and style

index.vue

// Add button "load more" before closing tag </template>

    <button class="btn btn-primary btn-more" @click="loadMore">Load More</button>
  </div>
</template>

// Add style for button "load more" after tag <style>

<style lang="scss" scoped>
.btn-more {
  margin: 20px auto;
  display: block;
}