h3{font-size:40px;font-weight:700;margin:30px 0}.kalkulator-pasek{display:flex;gap:15px;justify-content:center;margin-bottom:30px;flex-wrap:nowrap;overflow-x:auto}.kafelek{padding:15px 25px;background-color:#e0e0e0;border-radius:8px;cursor:pointer;font-weight:700;transition:background-color .3s}.kafelek:hover,.kafelek.active{background-color:#01956f;color:#fff}.kalkulator{display:none;max-width:1400px;margin:0 auto}.kalkulator.active{display:block}