frontend/src/components/TabIconButton.vue

<template>
  <div
    class="tab-icon-button"
    :class="active ? 'active' : ''"
  >{{ tab.unicode }}</div>
</template>

<script>
export default {
  props: ['tab', 'active', 'handleClick']
}
</script>

<style lang="scss" scoped>
@import '~@/style/theme.scss';

.tab-icon-button {
  -webkit-tap-highlight-color: transparent;
  z-index: 2;
  overflow: hidden;
  user-select: none;
  position: relative;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 1000px;
  cursor: pointer;
  text-align: center;
  font-family: 'iconfont', sans-serif;
  font-size: 34px;
  color: $icon-normal-color;
  transition: color 0.1s ease-out;

  &:hover {
    color: $icon-hover-color;
  }
}

.active {
  color: $theme-blue;
}

.line {
  height: 0;
  padding: 6px;
  margin: 0 4px 12px 4px;
  border-bottom: 2px solid $icon-normal-color;
}

a {
  outline: none;
  text-decoration: none;
  color: black;
}
</style>