Vue を使用してコーナー カード コンポーネントを実装するにはどうすればよいですか?

npm install -g @vue/cli

vue create my-app

<template>
  <div class="fold-card">
    <div class="fold-card-header">
      <h2>{{ title }}</h2>
      <a href="#" class="fold-card-close" @click="closeCard">
        <i class="fas fa-times"></i>
      </a>
    </div>
    <div class="fold-card-content">
      <slot></slot>
    </div>
    <div class="fold-card-footer">
      <a href="#" class="button">{{ buttonText }}</a>
    </div>
  </div>
</template>

<script>
export default {
  name: 'FoldCard',
  props: {
    title: String,
    buttonText: String
  },
  methods: {
    closeCard() {
      this.$emit('close-card');
    }
  }
};
</script>

<style scoped>
...
</style>

<link
  rel="stylesheet"
  href="https://use.fontawesome.com/releases/v5.8.1/css/all.css"
  integrity="sha384-gfdkzPd1SlsUB7XvyH+K9CQv5gW5ceXw981FeynX+11mZsJ6oO8WQI5Tzya/vRLB"
  crossorigin="anonymous"
/>

.framed {
  position: relative;
}

.framed::before,
.framed::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 80px 80px 0;
  border-color: transparent #7386D5 transparent transparent;
}

.framed::after {
  right: -2px;
  border-width: 0 78px 80px 0;
  border-color: transparent #ADC7FF transparent transparent;
  z-index: -1;
}

.fold-card {
  width: 320px;
  border-radius: 5px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  background-color: white;
  overflow: hidden;
  transition: all 0.3s ease;
}

.fold-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  height: 60px;
  background-color: #7386D5;
}

.fold-card-header h2 {
  color: white;
  font-size: 22px;
  margin: 0;
}

.fold-card-header .fold-card-close {
  color: white;
}

.fold-card-content {
  padding: 20px;
}

.fold-card-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  background-color: #E5E5E5;
}

.fold-card-footer .button {
  background-color: #7386D5;
  color: white;
  padding: 12px 24px;
  border-radius: 4px;
  font-size: 16px;
  text-decoration: none;
}

import Vue from 'vue';
import App from './App.vue';
import router from './router';

Vue.config.productionTip = false;

new Vue({
  router,
  render: h => h(App)
}).$mount('#app');

<template>
  <div id="app">
    <div class="container">
      <transition name="fold">
        <FoldCard v-if="showCard" @close-card="closeCard">
          <p>{{ description }}</p>
        </FoldCard>
      </transition>
      <button class="button" @click="showCard = true">显示折角卡片</button>
    </div>
  </div>
</template>

.fold-enter-active,
.fold-leave-active {
  transition-duration: 0.3s;
  transition-property: transform, opacity;
  transition-timing-function: ease;
}

.fold-enter {
  opacity: 0;
  transform: translateX(100%) rotate(45deg);
}

.fold-leave-to {
  opacity: 0;
  transform: translateX(100%) rotate(45deg);
}