body {
  margin: 0;
  height: 93vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
#active {
  color: dodgerblue;
}
/*Navbar*/
.nav-center {
  display: flex;
  justify-content: space-around;
  box-shadow: 0px 4px 15px grey;
}
.nav-center h4 {
  color: cornflowerblue;
  display: flex;
  align-items: center;
  font-size: 20px;
}
.nav-links {
  list-style: none;
  overflow: hidden;
}
.nav-links li {
  float: left;
}
.nav-links li a {
  display: block;
  padding: 16px;
  text-decoration: none;
  color: black;
}
.nav-links li a:hover {
  color: dodgerblue;
}

/*Main*/

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 89.5vh;
}

.container h2 {
  font-size: 50px;
  background-color: black;
  color: white;
  padding: 10px;
  border-radius: 10px;
}
.container button {
  background-color: white;
  border-color: green;
  border-width: 3px;
  font-size: 30px;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.4s;
}
.container button:hover {
  background-color: chocolate;
  color: white;
}