    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

/*      body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
     font-size: 16px;
      font-weight: 400;
      line-height: 1.5;
      color: #212529;
      text-align: left;
      background-color: #fff; 
    }  */

    .tabs {
      font-size: 0;
      max-width: 100%;
      margin-left: auto;
      margin-right: auto;
    }

    .tabs>input[type="radio"] {
      display: none;
    }

    .tabs>div {
    /*   скрыть контент по умолчанию */
      display: none; 
      border: 1px solid #e0e0e0;  
      padding: 10px 15px; 
      font-size: 16px;
    }

    /* отобразить контент, связанный с вабранной радиокнопкой (input type="radio") */
    #tab-btn-1:checked~#content-1,
    #tab-btn-2:checked~#content-2,
    #tab-btn-3:checked~#content-3 {
      display: block;
    }

    .tabs>label {
      display: inline-block;
      text-align: center;
      vertical-align: middle;
      user-select: none;
      background-color: #f5f5f5;
      border: 1px solid #e0e0e0;
      padding: 2px 8px;
      font-size: 16px;
      line-height: 1.5;
      transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out;
      cursor: pointer;
      position: relative;
      top: 1px;
    }

    .tabs>label:not(:first-of-type) {
      border-left: none;
    }

    .tabs>input[type="radio"]:checked+label {
      background-color: #fff;
      border-bottom: 1px solid #fff;
    }