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HTML

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About the <head>

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                div#app
  div.container
    
    div.tabs
      
      ul.tabs__header
        li.tabs__header-item(v-for='tab in tabs' v-on:click='selectTab(tab.id)' v-bind:class='{active: activeTab == tab.id}') {{tab.name}}
      
      div.tabs__container
        ul.tabs__list(ref='tabsList')
          li.tabs__list-tab(v-for='tab in tabs' v-bind:class='{active: activeTab == tab.id}') {{tab.content}}
!

CSS 

              
                html {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  background: radial-gradient(#7a5ce9, #1d2040);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 40px auto;
}

.tabs {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;

  // Список табов для переключения
  &__header {
    $color-accent: #66bd6c;
    $border-radius: 4px;

    width: 100%;
    margin: 0;
    padding: 0;
    list-style: none;
    background: #fff;
    border-radius: $border-radius $border-radius 0 0;
    border-bottom: 1px solid fade-out(#000, 0.9);
    //
    display: flex;
    flex-direction: row;
    align-items: center;

    // Кнопка одного таба
    &-item {
      flex: 1;
      text-align: center;
      padding: 10px 0;
      cursor: pointer;
      transition: background 0.3s ease;
      border-right: 1px solid fade-out(#000, 0.9);
      position: relative;

      &:first-child {
        border-radius: $border-radius 0 0 0;
      }

      &:last-child {
        border-radius: 0 $border-radius 0 0;
        border-right: 0;
      }

      &:hover {
        background: fade-out($color-accent, 0.9);
      }

      &:before {
        content: "";
        width: 8px;
        height: 8px;
        display: inline-block;
        background: #fff;
        border: 1px solid $color-accent;
        margin-right: 10px;
        border-radius: 50%;
        position: relative;
        top: 0px;
        transition: background 0.3s ease;
      }

      &:after {
        content: "";
        width: 0%;
        height: 1px;
        bottom: 0;
        left: 50%;
        position: absolute;
        transform: translate(-50%, 0%);
        background: $color-accent;
        transition: width 0.3s ease;
      }

      &.active {
        &:after {
          width: 100%;
        }

        &:before {
          background: $color-accent;
        }
      }
    }
  }

  // Контент с текстом. Обрезает лишние слайды
  &__container {
    background: #fff;
    position: relative;
    overflow-y: hidden;
  }

  // Список слайдов
  &__list {
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
    //
    display: flex;
    flex-direction: row;
    //
    transition: all 0.3s linear;

    &-tab {
      width: 100%;
      min-width: 100%;
      padding: 10px 10px;
      box-sizing: border-box;
      position: relative;
      transition: opacity .5s ease;
      opacity: 0;
      
      &.active {
        opacity: 1;
      }
    }
  }
}
!

JS 

              
                new Vue({
  el: '#app',
  
  data () {
    return {
      activeTab: 1,
      
      // Левый отступ для слайдов
      offsetRight: 0,
      
      // Список табов
      tabs: [
        {
          id: 1,
          name: 'One',
          content: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut convallis vel leo facilisis aliquet. Nullam finibus enim vitae ex tincidunt interdum. Pellentesque non condimentum ante, vitae viverra nibh. Integer ultrices tortor eget massa convallis pulvinar. Nullam ipsum neque, luctus ut felis non, auctor pellentesque magna. Maecenas velit neque, blandit in pharetra in, rutrum at nunc. Vestibulum non finibus quam. Sed semper aliquam varius. Sed dictum eu risus sed ultrices.'
        },
        {
          id: 2,
          name: 'Two',
          content: 'Cras id felis eu nulla pulvinar aliquet a ac elit. Ut tincidunt nisl tempus mi fermentum cursus eget et nibh. Pellentesque fermentum tincidunt mi, in tempus odio malesuada non. Mauris sit amet efficitur felis. Duis vestibulum cursus quam vel condimentum. Aliquam at tellus blandit, sodales purus non, convallis arcu. Mauris convallis sed lorem et condimentum. Aliquam neque metus, sollicitudin a est vitae, convallis finibus risus. Vivamus pulvinar imperdiet malesuada. Donec iaculis eros et sapien accumsan tincidunt.'
        },
        {
          id: 3,
          name: 'Three',
          content: 'Pellentesque ac metus odio. Nulla facilisi. Cras suscipit, tellus et vehicula faucibus, neque felis vestibulum nisi, eu consectetur ante metus eu ligula. Sed cursus posuere tellus eget tristique. Fusce venenatis ipsum nibh, hendrerit posuere massa ultrices quis. Donec interdum commodo ante id iaculis. Nulla semper nulla ut tristique vehicula. Sed porttitor justo massa, vitae consequat lectus viverra id.'
        }
      ]
    }
  },
  
  methods: {
    // Выбрать таб по id
    selectTab (id) {
      let tabsList = this.$refs.tabsList
      this.activeTab = id
      this.offsetRight = tabsList.clientWidth * (id - 1)
      // Сдвигаем полосу с табами
      tabsList.style.right = this.offsetRight + 'px'
    }
  }, 
  
  mounted () {
    // Выставляем стартовое значение
    let tabsList = this.$refs.tabsList
    tabsList.style.right = this.offsetRight + 'px'
  }
})
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999px

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