.tab-content {
  display: none;
  padding: 1em;
  border: 1px solid #ccc;
  background-color: #f9f9f9;
}

input[type="radio"] {
  display: none;
}

#tab1:checked ~ #content1,
#tab2:checked ~ #content2 {
  display: block;
}

.tab-button {
  display: inline-block;
  padding: 0.5em 1em;
  margin-right: 0.2em;
  background-color: #eee;
  cursor: pointer;
  border: 1px solid #ccc;
  border-bottom: none;
}

input[type="radio"]:checked + .tab-button {
  background-color: white;
  border-bottom: 1px solid white;
  font-weight: bold;
}