*,
*::before,
*::after {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  margin: 0;
  padding: 0;
}

.tabs {
  list-style: none;
  display: flex;
  justify-content: space-around;
  border-bottom: 1px solid black;
  margin: 0;
  padding: 0;
}

.tab {
  padding: 1rem;
  cursor: pointer;
}

.tab.active {
  background-color: #ccc;
}

.tab:hover {
  background-color: #aaa;
}

.tab-content {
  display: none;
  margin: 0 20px;
}

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