<template>
  <div class="to-top-btn-wrapper" v-show="showing" transition="fade">
    <button @click="$parent.scrollToTop()">
      <i class="fa fa-arrow-circle-up"></i>
      Top
    </button>
  </div>
</template>

<script>
export default {
  props: ['showing'],
};
</script>

<style lang="sass">
@import "../../../sass/partials/_vars.scss";
@import "../../../sass/partials/_mixins.scss";

.to-top-btn-wrapper {
  position: fixed;
  width: 100%;
  bottom: $footerHeightMobile + 30px;
  left: 0;
  text-align: center;
  z-index: 9999;

  &.fade-transition {
    opacity: 1;
    transition: opacity .5s;
  }

  &.fade-enter {
    opacity: 0;
  }

  &.fade-leave {
    opacity: 0;
  }

  button {
    border-radius: 18px;
    padding: 8px 16px;
    background: rgba(0, 0, 0, .5);
    border: 1px solid $colorMainText;

    i {
      margin-right: 4px;
    }
  }
}

@media screen and (min-width: 376px) {
  .to-top-btn-wrapper {
    display: none;
  }
}
</style>

<template>
  <div class="to-top-btn-wrapper" v-show="showing" transition="fade">
    <button @click="$parent.scrollToTop()">
      <i class="fa fa-arrow-circle-up"></i>
      Top
    </button>
  </div>
</template>

<script>
export default {
  props: ['showing'],
};
</script>

<style lang="sass">
@import "../../../sass/partials/_vars.scss";
@import "../../../sass/partials/_mixins.scss";

.to-top-btn-wrapper {
  position: fixed;
  width: 100%;
  bottom: $footerHeightMobile + 26px;
  left: 0;
  text-align: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity .5s;

  &.fade-enter {
    opacity: 0;
  }

  &.fade-leave {
    opacity: 0;
  }

  button {
    border-radius: 18px;
    padding: 8px 16px;
    background: rgba(0, 0, 0, .5);
    border: 1px solid $colorMainText;

    i {
      margin-right: 4px;
    }
  }
}

@media screen and (min-width: 376px) {
  .to-top-btn-wrapper {
    display: none;
  }
}
</style>

Fix back-to-top button transition effect
Fix back-to-top button transition effect
