JSFiddle - React, Tailwind, and code Playground

by copyhold

HTML

<main>
<h2 class="active tab">заголовок 1</h2>
<div class=tab>telo 1</div>    
<h2 class=tab>заголовок 2</h2>
<div class=tab>telo 2</div>    
<h2 class=tab>заголовок 3</h2>
<div class=tab>telo 3</div>
    <hr>
</main>

SCSS

main {
  weight: 800px;
  }
h2.tab {
    margin: 0;
    cursor: pointer;
    display: block;
    float: left;
    position: relative;
    height: 60px;
    line-height: 60px;
    color: $bgblue;
    padding: 0 10px;
    cursor: pointer;
    border-top: 5px solid transparent;
    font-size: 1.1em;
    text-align: center;
    font-weight: bold;
    background:  #ebebeb;
    &.active {
      cursor: default;
      background: #fff;
      border-top: 5px solid yellow;
      font-weight: bold;
      color: $gray;
      &:after { display: none; }
    }
    &:after {
      content:" ";
      height: 48px;
      border-left:1px solid #ccc;
      border-right: 1px solid #fff;
      width:0;
      overflow:hidden;
      position: absolute;
      right: 0;
      top:5px;
    }
  }
  div.tab {
    margin-top: 65px;
    float: right;
    width: 100%;
    margin-left: -100%;
    display: none;
  }
  h2.tab.active+div.tab {
    display: block;
  }
hr {
    clear: both;
}
}

JavaScript

$('h2.tab').click(function(){
    if ($(this).hasClass('active')) return;
    $(this).addClass('active').siblings('h2').removeClass('active');
  });