townsquare/src/components/Modal.vue

<script>
  export default {
    methods: {
      close() {
        this.$emit('close');
      },
    },
  };
</script>
<template>
  <transition name="modal-fade">
    <div class="modal-backdrop" @click="close">
      <div class="modal"
           role="dialog"
           aria-labelledby="modalTitle"
           aria-describedby="modalDescription"
           @click.stop=""
      >
        <slot></slot>
      </div>
    </div>
  </transition>
</template>
<style>
  .modal-backdrop {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
  }

  .modal {
    background: rgba(0,0,0,0.8);
    padding: 10px 20px;
    border-radius: 10px;
    box-shadow: 2px 2px 20px 1px #000;
    overflow-x: auto;
    display: flex;
    flex-direction: column;
    max-width: 60%;
  }

  .modal-fade-enter,
  .modal-fade-leave-active {
    opacity: 0;
  }

  .modal-fade-enter-active,
  .modal-fade-leave-active {
    transition: opacity .2s ease
  }
</style>