body {
  margin: 0;
}
main {
  margin: 20px;
}
h1 {
  text-align: center;
  text-decoration: underline;
}
ul {
  background-color: pink;
  overflow: hidden;
  margin: 0;
  padding: 0;
  list-style-type: none;
}
a {
  color: black;
  text-decoration: none;
  float: left;
  padding: 10px;
}
a:hover {
  background-color: rgb(241, 110, 132);
}
a.active {
  background-color: rgb(232, 44, 75);
}