.navbar {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50px;
  background-color: #333;
}

.navbar a {
  color: #fff;
  text-decoration: none;
  font-size: 18px;
  padding: 10px;
}

.main-content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.btn {
  font-size: 24px;
  padding: 20px;
  background-color: #f00;
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}

.btn a {
  color: #fff;
  text-decoration: none;
}

.navbar {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50px;
  background-color: #333;
}

.navbar a {
  color: #fff;
  text-decoration: none;
  font-size: 18px;
  padding: 10px;
}

.main-content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.btn {
  font-size: 24px;
  padding: 20px;
  background-color: #f00;
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}

.btn a {
  color: #fff;
  text-decoration: none;
}

body {
    background-image: url('https://i.postimg.cc/XN2mnJtm/4e1fe1ee64db4c25.jpg');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}