/* ZAKŁADKI */
 .tab-content {
  display: none;
  padding: 20px;
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.tab-content.active {
  display: block;
}

.tab-content h2 {
  margin-bottom: 15px;
  padding-bottom: 5px;
}

.header {
  padding: 20px;
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 4px;
}