Diseño de orden de clase en CSS3 5y3s2h

En este Tutoriales En Linea les traemos este truco de efecto que permite efectos visuales en diseño de orden de clase - double wing layout en CSS3.
Normalmente, este diseño no limita la altura del lado izquierdo, mientras que el lado derecho debe centrarse con la altura autoadaptativa.

Requisitos para este diseño:

<style>
  main {
    width: 100%;
    padding: 39px 29px;
    font-size: 12px;
  }
  section {
    width: 100%;
    box-shadow: 0 0 0 1px #eee;
    overflow: hidden;
  }
  section > span{
    width: 20%;
    display: inline-block;
    vertical-align: middle;
    margin-left: -3px;
    padding-left: 12px;
  }
  section::after {
    content: '';
    display: inline-block;
    height: 100%;
    vertical-align: middle;
  }
  .left {
    width: 45%;
    margin-left: 0;
    padding: 12px;
  }
  .center {
    width: 35%;
    border: 1px solid #eee;
    padding-top: 999px;       /* h */
    padding-bottom: 999px;    /* a */
    margin-top: -999px;       /* c */
    margin-bottom: -999px;    /* k */
    position: relative;
  }
  .left .item {
    width: 100%; height: 85px;
    text-align: center;
    line-height: 85px;
    background: rgba(180,160,120,.1);
    position: relative;
  }
  .left .item:not(:first-child) {
    margin-top: 24px;
  }
  .left .item:not(:first-child)::before {
    content: '';
    position: absolute;
    top: -12px; right: -12px; left: -12px;
    border-top: 1px solid #eee;
  }
</style>

<main class="main">
    <section>
      <span class="left">
        <div
          v-for="ele in elements"
          @click="handleClick"
          class="item">
          {{symbol}}
        </div>
      </span>
      <span class="center">Vertical centering<br>Vertical centering Vertical centering</span>
      <span class="right">Vertical centering</span>
    </section>
</main>

<script>
  export default {
    data () {
      return {
        elements: Array(2).fill(1),
        symbol: '➕'
      }
    },
    methods: {
      handleClick () {
        this.elements.length == 2 ? (_ => {
          this.elements.push(1);
          this.symbol = '➖';
        })() : (_ => {
          this.elements.pop();
          this.symbol = '➕';
        })()
      }
    }
  }
</script>

Ver resultado
{PAGEBREAK}

<style>
  main {
    width: 100%;
    padding: 39px 29px;
    font-size: 12px;
  }
  section {
    width: 100%;
    box-shadow: 0 0 0 1px #eeeeee;
    display: flex;
    overflow: hidden;
  }
  section > span {
    width: 20%;
    padding: 12px;
    align-self: center;
  }
  .left {
    width: 45%;
    display: flex;
    flex-direction: column;
    padding-bottom: 0;
  }
  .center {
    width: 35%;
    padding-top: 999px;       /* h */
    padding-bottom: 999px;    /* a */
    margin-top: -999px;       /* c */
    margin-bottom: -999px;    /* k */
    border: 1px solid #eee;
  }
  .left .item {
    text-align: center;
    line-height: 85px;
    background: rgba(180,160,120,.1);
    position: relative;
    margin-bottom: 12px;
  }
</style>

  <main class="main">
    <section>
      <span class="left">
        <div
          v-for="ele in elements"
          @click="handleClick"
          class="item">
          {{symbol}}
        </div>
      </span>
      <span class="center">vertical centering<br>vertical centering</span>
      <span class="right">vertical centering</span>
    </section>
  </main>

<script>
  export default {
    data () {
      return {
        elements: Array(2).fill(1),
        symbol: '➕'
      }
    },
    methods: {
      handleClick () {
        this.elements.length == 2 ? (_ => {
          this.elements.push(1);
          this.symbol = '➖';
        })() : (_ => {
          this.elements.pop();
          this.symbol = '➕';
        })()
      }
    }
  }
</script>

Ver resultado
{PAGEBREAK}

<style>
  main {
    width: 100%;
    padding: 39px 29px;
    font-size: 12px;
  }
  section {
    display: grid;
    align-items: center;
    grid-template-columns: 45% 35% calc(20% - 2px);
    grid-column-gap: 1px;
    background: #eeeeee;
    box-shadow: 0 0 0 1px #eeeeee;
  }
  section > span {
    height: 100%;
    padding: 12px;
    display: grid;
    align-items: center;
    background: white;
  }
  .left {
    display: grid;
    grid-row-gap: 12px;
  }
  .left .item {
    text-align: center;
    line-height: 85px;
    background: rgba(180,160,120,.1);
  }
</style>

  <main class="main">
    <section>
      <span class="left">
        <div
          v-for="ele in elements"
          @click="handleClick"
          class="item">
          {{symbol}}
        </div>
      </span>
      <span class="center">vertical centering<br>vertical centering</span>
      <span class="right">vertical centering</span>
    </section>
  </main>

<script>
  export default {
    data () {
      return {
        elements: Array(2).fill(1),
        symbol: '➕'
      }
    },
    methods: {
      handleClick () {
        this.elements.length == 2 ? (_ => {
          this.elements.push(1);
          this.symbol = '➖';
        })() : (_ => {
          this.elements.pop();
          this.symbol = '➕';
        })()
      }
    }
  }
</script>

Ver resultado